Vehicle tail light multi-scene prompting method and system based on v2x multi-source information cooperation

Abstract

The application discloses a vehicle tail light multi-scene prompting method and system based on V2X multi-source information cooperation, relates to the technical fields of intelligent transportation, vehicle networking and man-machine interaction, acquires standard traffic signal lamp state messages and analyzes the same to obtain signal lamp states corresponding to a current lane; based on the signal lamp states, the positioning information, the real-time vehicle speed and the driving direction of the vehicle, whether the vehicle satisfies multiple conditions at the same time is judged, a corresponding scene is determined according to the conditions satisfied at the same time, and a tail light information display function is triggered according to the scene; corresponding image display instructions are generated based on the signal lamp states, different scenes are combined, and the tail light display screen is driven to light up and display corresponding information; when it is detected that the vehicle has crossed a stop line or the signal lamp state has become irrelevant to the current scene, the display is terminated, and the tail light returns to normal function. The traffic signal lamp states at a front intersection, dynamic risk events and special passing instructions are visually informed to a following vehicle through a tail light display screen of the vehicle.

Description

Technical Field

[0001] This invention relates to the fields of intelligent transportation, vehicle networking and human-machine interaction, and in particular to a method and system for multi-scenario prompting of vehicle taillights based on V2X multi-source information collaboration. Background Technology

[0002] When driving on urban roads, following large vehicles at intersections, the driver's view is often completely obstructed, making it impossible to observe changes in traffic lights. This leads to delayed starts when the green light turns on, reducing intersection efficiency, and some drivers may engage in dangerous "probing" behavior to observe the lights or misjudge the signal status, increasing the risk of rear-end or side collisions.

[0003] Existing technology can only forward static traffic light status and lacks the ability to warn of sudden dynamic risks. At intersections with green lights or when the vehicle is about to pass, it cannot transmit dynamic risks outside the driver's line of sight to following vehicles in real time. At the same time, it cannot handle special passage instructions such as on-site traffic police command and priority passage for special vehicles. This may cause confusion to the driver of the following vehicle when the vehicle in front is obeying higher priority instructions, as its taillights may still be red. It has technical defects of incomplete scenario coverage and insufficient ability to deal with dynamic events. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, this invention provides a method and system for multi-scenario prompting of vehicle taillights based on V2X multi-source information collaboration. By utilizing vehicle-road cooperative technology and integrating multi-source traffic information, the status of traffic lights at the intersection ahead, dynamic risk events, and special passage instructions are adaptively and visually communicated to following vehicles through the vehicle's taillight display screen.

[0005] To achieve the above objectives, one or more embodiments of the present invention provide the following technical solutions: In a first aspect, the present invention provides a method for multi-scenario prompting of vehicle taillights based on V2X multi-source information collaboration, including: Obtain and parse the standard traffic light status message to get the traffic light status corresponding to the current lane; Based on the traffic light status, combined with the vehicle's location information, real-time speed, and driving direction, it is determined whether the vehicle simultaneously meets multiple conditions. Based on the conditions met simultaneously, the corresponding scenario is determined, and the taillight information display function is triggered according to the scenario. Based on the status of the traffic lights, corresponding image display instructions are generated, and combined with different scenarios, the taillight display screen is driven to light up and display the corresponding information. When the system detects that the vehicle has crossed the stop line or the traffic light status has become irrelevant to the current scene, the display will stop and the taillights will return to normal function.

[0006] A further technical solution is that the traffic light status includes at least the traffic light ID, current light color, remaining countdown time, and valid lane.

[0007] A further technical solution defines a waiting-to-go scenario as follows: when lane matching, vehicle being stationary while waiting, and the current traffic light color being red are all met simultaneously; when lane matching, vehicle being stationary while waiting, the current traffic light color being green, and a dynamic obstacle warning is detected simultaneously, it is defined as a green light risk warning scenario; and when vehicle matching, vehicle being stationary while waiting, the current traffic light color being red, and a special clearance instruction is received simultaneously, it is defined as a red light special clearance scenario.

[0008] A further technical solution is that the lane matching specifically involves: determining whether the vehicle is located within the lane sequence controlled by the traffic lights by comparing the vehicle's positioning information with the valid lanes in the traffic light status.

[0009] A further technical solution involves displaying the remaining countdown time on the taillight display screen against a red background when waiting for traffic to pass.

[0010] A further technical solution involves displaying a flashing pedestrian icon on a yellow background and a warning text label when a green light is used for risk warning.

[0011] A further technical solution involves displaying a green arrow on the taillight display screen and text indicating that traffic police are directing traffic in the event of a red light exception.

[0012] Secondly, this invention provides a vehicle taillight multi-scenario prompting system based on V2X multi-source information collaboration, including: The status parsing module is configured to: acquire and parse standard traffic light status messages to obtain the traffic light status corresponding to the current lane; The scene judgment module is configured to: based on the traffic light status, combined with the vehicle's location information, real-time vehicle speed and driving direction, determine whether the vehicle meets multiple conditions at the same time, determine the corresponding scene based on the conditions met at the same time, and trigger the taillight information display function according to the scene. The taillight display module is configured to generate corresponding image display instructions based on the signal light status, and drive the taillight display screen to light up and display corresponding information in combination with different scenarios; The display termination module is configured to terminate the display and restore the taillights to normal function when it is detected that the vehicle has crossed the stop line or the signal light status has become irrelevant to the current scene.

[0013] Thirdly, the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the vehicle taillight multi-scenario prompting method based on V2X multi-source information collaboration as described in the first aspect.

[0014] Fourthly, the present invention provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the steps of the vehicle taillight multi-scenario prompting method based on V2X multi-source information collaboration as described in the first aspect.

[0015] The above one or more technical solutions have the following beneficial effects: By directly receiving standard traffic light status messages broadcast by roadside units through the vehicle-mounted V2X communication module, and combining vehicle positioning information, real-time speed, and driving direction to make multi-condition scenario judgments, the preceding vehicle is transformed into a mobile information relay station. This allows drivers of following vehicles to still be aware of the traffic light status and dynamic road conditions at the intersection ahead even when their view is obstructed, fundamentally eliminating information blind spots in following scenarios. Through a multi-scenario differentiated display strategy, countdown information can be displayed synchronously in regular waiting scenarios, while corresponding warnings or instructions can be generated in dynamic obstacle or special clearance scenarios, achieving unified coverage of multiple traffic scenarios. When the system detects that the vehicle has crossed the stop line or the traffic light status has become irrelevant to the current scenario, it immediately stops displaying and restores the taillights to normal function, ensuring the timeliness and accuracy of taillight information, avoiding the transmission of expired or invalid information to following vehicles, preventing misleading drivers, and improving intersection traffic efficiency and driving safety overall.

[0016] Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0018] Figure 1 This is a flowchart of a vehicle taillight multi-scenario prompting method based on V2X multi-source information collaboration according to an embodiment of the present invention; Figure 2 This is a flowchart of a method for a waiting passage scenario according to an embodiment of the present invention; Figure 3 This is a flowchart of the method for a green light risk warning scenario according to an embodiment of the present invention; Figure 4 This is a flowchart of the method for allowing traffic to proceed under special circumstances of a red light, according to an embodiment of the present invention. Detailed Implementation

[0019] It should be noted that the following detailed descriptions are exemplary and intended to provide further illustration of the invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0020] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0021] Where there is no conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0022] Terminology Explanation: V2X: Vehicle-to-Everything, is a communication technology that enables vehicles to exchange information with the outside world, including vehicle-to-vehicle, vehicle-to-roadside facilities, vehicle-to-pedestrian, and vehicle-to-network communication.

[0023] SPAT: Signal Phase and Timing, is a standard message format used in V2X communication to transmit traffic light status, including information such as signal light ID, current light color, remaining countdown time, and available lanes.

[0024] Roadside Unit (RSU) is a communication device installed on the roadside for V2X communication with onboard units, broadcasting information such as traffic light status and road safety messages.

[0025] On-Board Unit (OBU) is a communication device installed on a vehicle to receive information broadcast by roadside units and interact with the vehicle control system.

[0026] High-precision positioning: The positioning method uses technologies such as GPS, Beidou, and RTK to achieve centimeter-level positioning accuracy, ensuring the accuracy of vehicle location information.

[0027] LED dot matrix display screen: A display device composed of an array of light-emitting diodes, supporting three primary colors: red, green, and blue, and capable of displaying graphics, text, and dynamic effects.

[0028] When driving on urban roads, following large vehicles (such as buses and trucks) at intersections, the driver's view is often completely obstructed, making it impossible to observe changes in traffic lights. This leads to two common problems: first, when the green light turns on, the following vehicle is delayed in starting because it cannot receive the information in time, reducing the efficiency of traffic flow at the intersection; second, some drivers may engage in dangerous "probing" behavior or misjudge the signal status in order to observe the traffic lights, which can easily cause rear-end collisions or side collisions, posing a serious safety hazard.

[0029] Existing solutions have obvious limitations: adding auxiliary indicators to traffic light poles is costly and slow to be adopted; while the traffic light information provided by in-vehicle navigation software usually has a delay of several seconds and cannot be directly linked with the vehicle control system, failing to meet the requirements of safety-critical scenarios in terms of real-time performance and reliability.

[0030] With the rapid deployment of vehicle-to-infrastructure (V2X) infrastructure, vehicles can now receive precise traffic light phases and countdown information broadcast in real time from roadside units via V2X technology. How to transmit this crucial information to vehicles behind that are obstructed in the most intuitive and least distracting way has become a pressing technical challenge for improving road safety and efficiency.

[0031] In addition, existing V2X-based taillight display solutions still have shortcomings such as incomplete scene coverage and insufficient ability to handle dynamic events: First, there is a lack of early warning capabilities for sudden dynamic risks: current solutions primarily address the issue of obstructed vision caused by static traffic lights. However, at intersections where the light is green or traffic is about to proceed, dynamic risks outside the line of sight (such as pedestrians or non-motorized vehicles suddenly appearing across the road, or sudden road obstacles) pose a more dangerous safety hazard. Existing technology cannot effectively and synchronously warn following vehicles of these real-time risk information perceived by the roadside unit or the preceding vehicle through its taillights. This results in following vehicles receiving "green light is safe" information while potentially facing a sudden collision risk.

[0032] Secondly, it cannot handle traffic rule conflicts and special cases: In an intelligent connected environment, when special situations arise such as on-site traffic police direction, priority passage for special vehicles, or temporary traffic control, a conflict arises where "dynamic instructions take precedence over static traffic lights." Existing solutions can only transmit fixed traffic light states, which means that when the vehicle in front obeys a higher-priority instruction (such as a traffic police hand signal to proceed), its taillights may still be red. This can cause great confusion for drivers of following vehicles, and may even lead to misjudgments and chain violations, undermining the effectiveness of traffic management and the coordination of the traffic convoy.

[0033] Therefore, a V2X taillight interaction system that can go beyond simple traffic light relay and integrate dynamic road conditions and traffic instructions to achieve multi-scenario adaptation and intelligent priority arbitration has become a key technological requirement to promote vehicle-road cooperation from "information interconnection" to "safety and efficiency synergy".

[0034] To address the aforementioned technical issues, this invention proposes a method, system, and vehicle for multi-scenario taillight prompts based on V2X multi-source information collaboration. The core idea of ​​this technical solution is to transform the preceding vehicle into a mobile information relay station, receiving traffic light status messages broadcast by roadside units via an onboard V2X communication module, and simultaneously displaying these messages visually on the preceding vehicle's taillight display screen. This allows drivers of following vehicles to clearly obtain key information such as the status of traffic lights at the upcoming intersection, dynamic obstacle warnings, and special clearance instructions without needing to shift their gaze.

[0035] The technical implementation of this invention includes the following key steps: First, the information reception and credibility assessment step: the vehicle receives standard traffic light status messages broadcast by the roadside unit via the onboard V2X communication module. The vehicle's central processing unit parses and verifies the validity of the messages, and performs a quantitative evaluation of the credibility of the received V2X information, comprehensively considering factors such as signal strength, data integrity, and timestamp consistency. When the credibility score is lower than a preset threshold, the display is automatically downgraded or a warning sign is overlaid to prevent misjudgment due to V2X signal interference or deception. Second, the scenario trigger judgment step: combining the vehicle's high-precision positioning information, real-time vehicle speed, and driving direction, it is determined whether the vehicle simultaneously meets the requirements of lane matching, vehicle waiting status, traffic light being red or green, and detection. The taillight information display function is triggered only when conditions such as detecting dynamic obstacles or receiving special passage instructions are met. Third, in the display content generation stage, display instructions are generated based on the verified signal light status information and the trigger scenario type, controlling the taillight display screen to show the corresponding visual information. Fourth, in the rear vehicle intent perception and adaptive warning upgrade stage, the braking response status of the rear vehicle is perceived in real time through rear radar or cameras. If no braking action is detected after the rear vehicle issues a warning, the warning display intensity is automatically upgraded, forming a closed-loop feedback. Fifth, in the display control and termination stage, the generated display instructions are sent to the taillight display controller to drive the taillight display screen to light up and display information. The display is immediately terminated when it is detected that the vehicle has crossed the stop line or the signal light status becomes irrelevant.

[0036] The method and system of this invention are applicable to various application scenarios, including urban road intersections, following vehicle scenarios, and situations with obstructed vision. Typical application environments include the lead vehicle, roadside units, and traffic management centers. The lead vehicle is equipped with a V2X communication unit, a vehicle status perception unit, a central processing and control unit, and a taillight display execution unit. The V2X communication unit is used to receive traffic signal status messages broadcast by the roadside unit. The vehicle status perception unit includes a high-precision positioning module, a vehicle speed sensor, a vehicle bus interface, and an onboard forward vision / radar sensor, used to acquire the vehicle's real-time position, speed, and attitude information, and to detect obstacles ahead and the braking response status of following vehicles. The central processing and control unit is the core decision-making component, with a built-in processing chip and stored programs, used to perform information fusion, scene judgment, display content generation, and follower vehicle intent perception and adaptive warning upgrades. The taillight display execution unit consists of at least one high-resolution LED dot matrix display screen integrated at the rear of the vehicle and its dedicated drive controller, used for information visualization.

[0037] Furthermore, roadside units are installed at intersections to broadcast traffic light status messages and road safety information. The traffic management center uses these units to send special passage instructions. The preceding vehicle, the roadside units, and the traffic management center exchange information via V2X communication technology.

[0038] The data collection and processing in this application strictly comply with relevant laws and regulations. The collection of data such as vehicle location and road images requires authorization and is used only for traffic signal status synchronization and taillight display, not for any other unauthorized purposes. It should be understood that the example environment is described for illustrative purposes only and does not imply any limitation on the scope of this disclosure. This invention can also be applied to other scenarios such as intelligent transportation and road inspection, and the environment may also include components such as sensors and communication modules not shown.

[0039] Example 1 like Figure 1 As shown, this embodiment discloses a multi-scenario prompting method for vehicle taillights based on V2X multi-source information collaboration, including: Obtain and parse the standard traffic light status message to get the traffic light status corresponding to the current lane; Based on the traffic light status, combined with the vehicle's location information, real-time speed, and driving direction, it is determined whether the vehicle simultaneously meets multiple conditions. Based on the conditions met simultaneously, the corresponding scenario is determined, and the taillight information display function is triggered according to the scenario. Based on the status of the traffic lights, corresponding image display instructions are generated, and combined with different scenarios, the taillight display screen is driven to light up and display the corresponding information. When the system detects that the vehicle has crossed the stop line or the traffic light status has become irrelevant to the current scene, the display will stop and the taillights will return to normal function.

[0040] Furthermore, the traffic light status includes at least the traffic light ID, current light color, remaining countdown time, and valid lane.

[0041] Furthermore, when the conditions of lane matching, vehicle being stationary and waiting, and the current traffic light color being red are simultaneously met, it is determined to be a waiting passage scenario; when the conditions of lane matching, vehicle being stationary and waiting, the current traffic light color being green, and a dynamic obstacle warning is detected are simultaneously met, it is determined to be a green light risk warning scenario; when the conditions of vehicle matching, vehicle being stationary and waiting, the current traffic light color being red, and a special clearance instruction being received are simultaneously met, it is determined to be a red light special clearance scenario.

[0042] Furthermore, the lane matching specifically involves: determining whether a vehicle is located within a traffic light-controlled lane sequence by comparing the vehicle's location information with the valid lanes in the traffic light status.

[0043] Furthermore, in scenarios where traffic is waiting to proceed, the taillight display shows the remaining countdown time against a red background. In scenarios with a green light risk warning, the taillight display shows a flashing pedestrian icon against a yellow background, along with a warning text. In scenarios where traffic is allowed to proceed under special circumstances (e.g., a red light), the taillight display shows a green arrow and a warning text indicating that traffic police are directing traffic.

[0044] Furthermore, during the display process, the system continuously monitors two types of termination trigger conditions. Once either condition is met, the taillight signal light status display is immediately terminated, restoring the taillights to their normal brake light / turn signal function.

[0045] The first type of termination condition is when the vehicle crosses the stop line. The system comprehensively determines whether the vehicle has crossed the stop line using the following methods: First, based on the fusion of high-precision positioning and high-precision maps, the central processing unit (central processing and control unit) compares the vehicle's current high-precision positioning coordinates (accuracy better than 0.3 meters) with the geographical coordinates of the current intersection stop line in the pre-loaded high-precision map in real time. When the vehicle's centroid coordinates cross the stop line coordinates and the vehicle speed exceeds a preset starting threshold, it is determined that the vehicle has crossed the stop line. Second, as an auxiliary verification method, the system can use a forward-facing camera combined with image recognition algorithms to detect the ground stop line markings in real time. When the stop line disappears from the front of the vehicle in the camera's field of view and switches to directly below or behind the vehicle, the system assists in confirming the line crossing event. Both methods primarily rely on high-precision map judgment and secondarily on camera recognition; meeting either one is sufficient to trigger termination.

[0046] Preferably, the high-precision positioning adopts a GPS / BeiDou and RTK differential positioning fusion scheme, with a positioning update frequency of no less than 10 Hz to ensure real-time response to line crossing events; the parking line coordinate data in the high-precision map has an accuracy better than 0.1 meters, and is regularly updated through the cloud to maintain map freshness.

[0047] The second type of termination condition is when the traffic light status becomes irrelevant to the vehicle. This means the current traffic light status no longer guides the vehicle's passage decision, primarily including the following scenarios: First, the vehicle has not yet reached the intersection when the traffic light changes from red or green to yellow. In this case, the system continuously parses the light color field in the SPAT message received by V2X. When it detects a change from red / green to yellow, it combines the vehicle's high-precision positioning information to determine if the vehicle is still in the waiting area behind the stop line. If the vehicle has not crossed the stop line and the light has turned yellow, the system determines that the traffic light status is irrelevant to the vehicle's current passage decision and immediately triggers termination. Second, the vehicle leaves the lane sequence controlled by the current traffic light. This is determined by comparing real-time positioning coordinates with the effective lane range in the high-precision map; termination is triggered when the vehicle deviates from its lane sequence. Third, the traffic light ID in the SPAT message does not match the traffic light ID currently associated with the vehicle, or the SPAT message stops updating for more than a preset timeout period. The system determines that the traffic light status data is invalid and triggers termination.

[0048] Preferably, the termination timeout for the yellow light status is set to the full remaining time of the yellow light in the SPAT message, meaning that termination occurs immediately upon the appearance of the yellow light without any buffering or waiting. The preferred SPAT message timeout threshold is that failure is determined if no valid update is received for three consecutive message cycles, with the message cycle typically being 100 ms.

[0049] When any of the above termination conditions are triggered, the central processing unit immediately sends a termination command to the taillight display controller. The taillight display screen turns off the signal light status display, the drive controller returns control of the display to the vehicle's brake light / turn signal control system, and the taillights resume normal function. This termination mechanism ensures that the system will not continue to transmit incorrect or outdated information to following vehicles when the signal light status is meaningless, thus avoiding misleading drivers of following vehicles.

[0050] This embodiment describes the operation and effect of the system of the present invention in a typical scenario of obstructed vision. At an intersection equipped with a V2X roadside unit, a van equipped with the system of the present invention is waiting at a red light at the stop line, followed by a sedan. The van completely obstructs the sedan driver's view of the actual traffic lights ahead.

[0051] like Figure 2 As shown, it includes the following steps: S1: Obtain and parse the standard traffic light status message to get the traffic light status corresponding to the current lane; The vehicle receives standard traffic light status messages broadcast by the roadside unit through the onboard V2X communication unit. The message includes at least the traffic light ID, current light color, remaining countdown time, and valid lane information. The vehicle's central processing unit parses and verifies the validity of the message.

[0052] In this embodiment, the onboard V2X communication unit of the van receives SPAT messages broadcast from the roadside unit in real time. SPAT messages are a standard message format used in V2X communication to transmit traffic light status, including information such as traffic light ID, current light color, remaining countdown time, and available lanes.

[0053] The central processing unit parses the traffic light status corresponding to the current lane from the message, including the traffic light ID, current light color, remaining countdown time, and valid lane information, such as a red light with 18 seconds remaining. Simultaneously, the system performs a quantitative evaluation of the received SPAT message's reliability, comprehensively considering factors such as signal strength, data integrity, and timestamp consistency. Higher signal strength, better data integrity, and better timestamp consistency result in a higher reliability score.

[0054] Furthermore, the formula for calculating the credibility score is as follows:

[0055] in, To score credibility, For signal strength weights, Score the signal strength. For data integrity weight, Scoring for data integrity For timestamp consistency weight, A timestamp consistency score is given, and the following conditions are met: , , , All scores are greater than 0. The signal strength score is calculated based on the received strength of the V2X signal; the higher the received strength, the higher the score. The data integrity score is calculated based on whether each field in the SPAT message is complete; the better the data integrity, the higher the score. The timestamp consistency score is calculated based on the time deviation between the timestamp in the SPAT message and the onboard system clock; the smaller the time deviation, the higher the score.

[0056] Before leaving the factory, the system is calibrated using a large amount of measured data. The importance of the three factors is quantified and ranked using the analytic hierarchy process (AHP) or machine learning methods based on historical misjudgment samples, thereby determining the weights of each factor. , , The initial value of the system is used; during the actual operation of the vehicle, the system can adaptively adjust the weights according to the current road environment (such as highways, urban roads, tunnels, etc.) to adapt to the differences in the degree of influence of various factors on credibility under different scenarios.

[0057] The system presets a credibility scoring threshold. This threshold can be calibrated at the system's factory according to security redundancy requirements, or it can be adjusted by the user or operator in the system settings interface according to the actual application scenario. When the credibility score... Higher than or equal to the threshold When the system determines that the currently received V2X information is reliable, it drives the taillight display to show the corresponding signal light status information according to the normal procedure; when the reliability score is... Below the threshold If the system determines that the current V2X information lacks credibility, it automatically triggers a downgrade mechanism: a flashing warning border is overlaid on the taillight display or the display brightness is reduced to alert following drivers that the displayed information is uncertain and should be used with caution; if the credibility score remains below the threshold... If the preset duration is exceeded, the system will pause the taillight signal status display function until the signal stabilizes and the score rises above the threshold again. It will then automatically return to normal display.

[0058] By using reliable quantitative evaluation, the problem of misjudgment caused by interference or spoofing of V2X signals in existing technologies is solved, thereby improving the robustness of the system.

[0059] S2: Based on the traffic light status, the system determines three conditions: lane matching, vehicle stationary, and red light. If all three conditions are met simultaneously, the system is determined to be a waiting scenario and automatically triggers the taillight information display function. Based on the vehicle's high-precision positioning information, real-time speed, and direction of travel, determine whether the vehicle simultaneously meets the following conditions: a) Based on the vehicle's positioning and direction of travel, determine that the vehicle is entering and is within the lane sequence controlled by the traffic light; b) The vehicle is stationary or at extremely low speed (e.g., below 5 km / h) while waiting; c) The received traffic light status is red or green. The taillight information display function is triggered only when all conditions are met; d) Through onboard sensors (e.g., forward-facing camera, radar) or road safety messages received via V2X, detect a dynamic obstacle affecting traffic (e.g., pedestrians, non-motorized vehicles, animals, accident vehicles) in front of the vehicle; or, receive a special passage instruction from the traffic management center via V2X, or recognize a traffic police officer's on-site clearance gesture through onboard equipment.

[0060] In this embodiment, the system simultaneously verifies the vehicle's own status, confirming its location within the target lane through high-precision positioning and confirming its stationary state (0 km / h) through a vehicle speed sensor. High-precision positioning utilizes technologies such as GPS, BeiDou, and RTK to achieve centimeter-level accuracy, ensuring the accuracy of vehicle location information. When lane matching, vehicle stationary, and a red light are simultaneously met, the system determines that a waiting-to-pass scenario is satisfied and automatically triggers the taillight information display function. This step ensures the accuracy of the display trigger through multiple condition checks, avoiding information interference caused by false triggers.

[0061] In a preferred embodiment of the present invention, the condition for determining a vehicle waiting state is that the vehicle speed is below 5 km / h. Lane matching is determined by comparing the vehicle's current location information with the valid lane information in the SPAT message to confirm that the vehicle is within the traffic light-controlled lane sequence.

[0062] S3: In the waiting-for-pass scenario, generate corresponding graphic display instructions based on the traffic light status to drive the taillight display to light up and display the traffic light status; Based on the verified signal light status information, corresponding graphical display instructions are generated. The instructions control the taillight display screen to show easily readable visual information synchronized with the signal lights ahead. The core formats include: a large digital countdown, a horizontal progress bar, and a background color consistent with the signal light color (red light with red halo, green light with green halo).

[0063] When the triggering condition is the original a, b, c (normal traffic light waiting): generate the corresponding graphic according to the original scheme (such as red light "12", green light "3").

[0064] When the trigger condition is a newly added dynamic obstacle warning (especially in green light or upcoming green light scenarios): the system generates a warning display instruction. For example: overlay a flashing yellow exclamation mark (!) icon in the countdown area, or switch to a specific warning graphic (such as a pedestrian outline or a triangular warning sign); the display background color can be changed to a bright yellow (warning color), or the green light background can be retained but the flashing can be intensified; brief text such as "Caution" can be added.

[0065] When the trigger condition is a newly added special clearance instruction (especially in red light scenarios): the system generates a special clearance display instruction. For example, it displays a clear green upward arrow (→ or ↑) accompanied by text such as "Traffic Police Clearance" or "Special Clearance". Key point: This display must be distinctly different from the regular red light countdown in color and graphics to avoid misunderstanding by following vehicles. In this case, the red light countdown can be stopped, or a countdown can be retained in a small area for reference, but the special clearance instruction should be the primary indication.

[0066] In this embodiment, the system generates a corresponding graphic display instruction based on the parsed red light status and remaining countdown time. The instruction is sent to a dedicated display screen driver controller integrated at the rear of the van. The display screen is then illuminated, clearly displaying large Arabic numerals against a striking red background; for example, if the remaining countdown time is 18 seconds, the display shows "18". The display content is strictly synchronized with the roadside traffic lights, and the numbers are subsequently updated decreasing every second, forming a precise countdown display.

[0067] This step enables the synchronized display of the taillights on the vehicle in front and the traffic lights on the roadside, allowing drivers of following vehicles to clearly see the status of the traffic lights at the intersection ahead without having to shift their gaze.

[0068] During the display process, the system continuously monitors the reliability score of the V2X signal. If, at any moment, the reliability score suddenly drops below a preset threshold due to signal interference or other reasons, the system will automatically overlay a flashing yellow warning border on the taillight display screen to remind drivers of following vehicles to carefully refer to the countdown information, while simultaneously reducing the display brightness as a warning. Once the reliability score recovers to above the preset threshold, the warning border automatically disappears, and the display brightness returns to normal. This mechanism ensures the system's robustness in the event of signal interference or deception, preventing misjudgments.

[0069] In a preferred embodiment of the present invention, the taillight display screen adopts a high-resolution LED dot matrix display screen with a resolution of 64×64 pixels to 256×256 pixels and a brightness of 5000 cd / m² to 15000 cd / m², ensuring clear visibility even in strong light environments. The display area of ​​the screen is physically or visually separated from the traditional brake light and turn signal areas, and uses independently controlled LED matrices to ensure clear and independent information display.

[0070] In a preferred embodiment of the present invention, the displayed content can be designed to be both machine-readable and human-readable. For example, while displaying visible numbers, LEDs are driven to flash in a specific high-frequency encoding mode. This flashing is imperceptible to the human eye but can be decoded by a smart connected vehicle equipped with a high-speed vision sensor, enabling precise vehicle-to-vehicle (V2V) data transmission and serving as a redundant backup for V2X communication.

[0071] As a preferred embodiment of the present invention, the vehicle central control screen provides a user settings interface, allowing the driver to customize function switches, select display modes (simple numbers / detailed progress bars) or adjust display brightness to adapt to different environments and personal preferences.

[0072] As a preferred embodiment of the present invention, it also includes a scene-adaptive display strategy: the system can drive the taillight display screen to present distinctly different visual themes (colors, graphics, dynamic effects) according to different triggering scenarios (normal waiting, dynamic warning, special clearance), ensuring that drivers of following vehicles can quickly and unambiguously understand the special nature of the current road conditions. For example, the display modes can be divided into "information mode", "warning mode", and "command mode".

[0073] S4: When the remaining countdown time in the signal light status is lower than the end threshold, it is determined that the countdown is about to end, and the update command drives the display screen to switch the background color. The taillight information display ends after the vehicle starts moving.

[0074] The generated display command is sent to the taillight display controller, which drives the taillight display screen to light up and display information. When it is detected that the vehicle has crossed the stop line, or the traffic light status becomes irrelevant (e.g., the traffic light has turned yellow before the vehicle has reached the intersection), the display will immediately stop and the taillights will return to normal function.

[0075] For the "Dynamic Obstacle Warning" display, when the system detects that the obstacle has left the risk area or the risk has been eliminated, the normal traffic light status display will automatically resume.

[0076] The "special release order" indicates that the process will automatically terminate when the vehicle crosses the stop line or the order expires.

[0077] In this embodiment, a clear distinction is made between the "red light countdown" and the "green light start prompt". When the red light countdown displays "2", the system anticipates an impending state change based on the SPAT message and prepares to update the display accordingly. At the instant the red light ends and the green light illuminates, the background color of the rear display screen switches to green and displays a start prompt indicator (such as a green arrow or the word "GO"), which disappears automatically after a preset duration T.

[0078] As a preferred embodiment of this practice, the preset duration T is a configurable parameter, such as 2 to 5 seconds, which can be flexibly set according to the actual situation.

[0079] When the countdown is about to end, such as when "2" is displayed, the system anticipates the state switch based on the SPAT message. The instant the red light ends and the green light turns on, the system immediately updates the instructions, the background color of the rear display screen changes to green, the number changes to "3" to indicate the safe start period, and the countdown begins.

[0080] Although the drivers of cars behind cannot directly see the traffic lights at the intersection, they can accurately grasp the timing of passage by observing the clear and synchronized countdown and light color switching on the display screen at the rear of the vehicle in front (van). This allows them to keep pace with the convoy ahead and start smoothly, significantly improving traffic efficiency.

[0081] The system features a safety-priority interruption mechanism. When a vehicle detects emergency braking (such as when the brake pedal depressor rate exceeds a threshold) or a collision warning occurs, regardless of the current display status, the system will immediately interrupt the display of traffic signal information and forcibly switch to a high-priority safety warning mode (such as full-screen red high-frequency flashing). The system will resume normal information display or turn off the display once the danger has passed. Specifically, at any stage of this process, if a van triggers emergency braking due to a sudden situation, its system will immediately interrupt the traffic signal display and, with the highest priority, control the rear display screen to enter a full-screen red high-frequency flashing emergency warning mode, thereby issuing a stronger and clearer danger warning to all vehicles behind, including cars, than traditional brake lights. Once the danger has passed, the system will either resume normal information display or turn it off. This mechanism ensures that the system prioritizes driving safety in emergency situations.

[0082] In a preferred embodiment of this invention, the emergency braking condition is that the brake pedal depressing rate exceeds a preset threshold, for example, a depressing rate exceeding 500 mm / s per second. The flashing frequency of the emergency warning mode is 5 Hz.

[0083] This embodiment demonstrates that the present invention effectively solves the information blind spot problem caused by obstructed vision for following vehicles at intersections by transforming the preceding vehicle into a mobile information relay station. It enables critical traffic signals to penetrate the obstruction of the preceding vehicle and be transmitted directly and in real time to affected drivers behind, thereby reducing start-up delays, driving anxiety, and the potential accident risk caused by misjudgment, thus optimizing the overall safety and efficiency of intersections. Simultaneously, the V2X information reliability scoring mechanism ensures the system's robustness under signal interference or deception conditions, preventing misjudgments.

[0084] This invention addresses the practical problem of following vehicles being unable to perceive the status of traffic lights at intersections due to obstructed views from vehicles in front. By simultaneously visualizing the real-time traffic light information (light color and countdown) received by the vehicle in front on its taillight display, following drivers can clearly obtain the information without shifting their gaze, thereby reducing intersection delays and improving driving safety. It also addresses the issue of immediate notification of unexpected road conditions. While waiting or preparing to cross, the driver of the vehicle in front may notice sudden risks outside their line of sight (such as pedestrians or non-motorized vehicles running red lights from the side), or encounter special traffic instructions such as those given by traffic police. At this time, following vehicles, due to obstructed views, cannot perceive this dynamic and crucial information. Traditional solutions cannot solve this problem, posing safety hazards and causing traffic delays. This invention utilizes V2X and onboard sensors to "visualize" and transmit real-time images of dynamic risks (such as "ghost pedestrians") and special traffic instructions to following vehicles, achieving beyond-line-of-sight warnings of blind spot risks at intersections and significantly improving active safety in complex scenarios.

[0085] Therefore, the present invention achieves the following beneficial effects: Addressing key safety concerns and eliminating blind spots, this system creatively transforms the vehicle in front into an "information relay station," allowing critical road signal status to penetrate physical obstructions and reach the driver of the following vehicle directly, fundamentally solving the problem of information blockage when following another vehicle at intersections.

[0086] Improving traffic efficiency and promoting smoother traffic flow. Drivers of following vehicles can prepare to start in advance based on the countdown displayed on the taillights of the vehicle in front, achieving a smooth start for the convoy with near synchronization, effectively reducing lost time under green light conditions, and increasing the vehicle throughput rate per signal cycle.

[0087] Human-computer interaction aligns with natural driving habits. Information is presented in the area that the driver naturally looks at when following another vehicle (the rear of the vehicle in front), eliminating the need to look away from the lane or down to check in-car equipment, greatly reducing cognitive distraction and conforming to the ergonomic principles of safe driving.

[0088] The technology is highly practical and easy to promote. The solution mainly relies on V2X modules and intelligent taillight hardware that are gradually being adopted in mass-produced vehicles. It does not require large-scale modification of road infrastructure, has low social implementation costs, and can be quickly promoted with the popularization of intelligent connected vehicles, resulting in significant commercial and social benefits.

[0089] This solution expands the safety boundaries of vehicle-road cooperative systems. It not only addresses the issue of line-of-sight obstruction caused by static traffic lights, but also utilizes V2X and onboard sensors to transmit real-time "visualization" of dynamic risks ahead (such as "ghost pedestrians") and special traffic instructions to following vehicles. This enables beyond-line-of-sight warnings of blind spot risks at intersections, significantly improving active safety in complex scenarios.

[0090] It enhances the flexibility and compliance of traffic management: by displaying special instructions such as traffic police commands through taillights, it ensures that the legitimate driving intentions of the vehicle in front in special circumstances (such as the passage of emergency vehicles or traffic control) can be clearly communicated to the vehicle behind, guiding the coordinated behavior of the vehicle behind, avoiding traffic chaos or violations caused by lack of information transparency, and improving the overall compliance and efficiency of road network operation.

[0091] like Figure 2 The illustration shows an example of this embodiment. The vehicle in front is waiting at a red light before the stop line at an intersection. Its onboard V2X system receives the traffic light status information (red light, 12 seconds remaining) broadcast by the roadside unit. After the system determines that the triggering conditions are met, it controls the display screen integrated at the rear to display the number "12" on a red background. The driver of the following vehicle can clearly see this countdown information, thus accurately knowing the traffic light status and making a good driving decision.

[0092] Example 2 This embodiment discloses a multi-scenario taillight prompting method based on V2X multi-source information collaboration. This embodiment assumes an intersection where the vehicle in front is the first vehicle in the green light waiting line. Its V2X system receives a road safety message broadcast by the roadside unit, indicating that a pedestrian is running a red light and entering the vehicle's path on the right. Simultaneously, its forward-facing camera also confirms this risk.

[0093] like Figure 3 As shown, the method includes the following steps: S1: Obtain and parse the standard traffic light status message to get the traffic light status corresponding to the current lane; S2: Based on the traffic light status, it judges four conditions: lane matching, vehicle stationary, green light, and dynamic obstacle warning. If all conditions are met, it is judged as a green light risk warning scenario and the taillight information display function is automatically triggered. In this embodiment, the system determines that the following conditions are met: lane matching, vehicle stationary (speed 0 km / h), green light status, and dynamic obstacle warning detection. Specifically, lane matching is confirmed by high-precision positioning to ensure the vehicle is in the target lane; vehicle stationary is confirmed by the vehicle speed sensor to indicate a speed of 0 km / h; the green light status is determined by parsing the current light color (green) from the SPAT message and obtaining the remaining countdown time, such as 5 seconds; and dynamic obstacle warning is confirmed by V2X receiving a road safety message and the forward-facing camera detecting a pedestrian target, with both information fusion confirming the presence of a risk. This step ensures the accuracy of dynamic obstacle detection through multi-source information fusion, avoiding false alarms or missed alarms.

[0094] Furthermore, the detection of dynamic obstacle warnings is achieved by fusing two information streams: V2X road safety messages and pedestrian detection from forward-facing cameras. The system only confirms the existence of a risk and triggers the warning display when both information streams are marked as "valid warning".

[0095] The first information source is the Road Safety Message (RSM) received via V2X. The central processing unit parses the obstacle location, type, and motion information in the RSM message to determine whether the obstacle falls within the risk area of ​​the vehicle's expected driving trajectory. If so, the first information is marked as a "valid warning." The risk area is dynamically calculated based on the vehicle's current speed and estimated braking distance.

[0096] The second information source is real-time image detection from the vehicle's forward-facing camera. The central processing unit identifies pedestrian targets in the image, estimates their relative distance and lateral offset from the vehicle, and determines whether the pedestrian is within the passageway and whether their movement trend is to cross. If so, the second information is marked as a "valid warning".

[0097] Dual-source fusion employs logical confirmation: the warning display is triggered only when both sources are "valid warnings"; if only one source is valid, the system enters a continuous observation window, and the warning is triggered if the other source is also confirmed within the window; otherwise, the warning is canceled.

[0098] Preferably, the duration of the continuous observation window is 0.5 to 1 second; the longitudinal range of the risk area is preferably 1.5 times the safe braking distance corresponding to the current vehicle speed, and the lateral range is the current lane width.

[0099] S3: In a green light risk warning scenario, generate a warning command and drive the display screen to show the warning information; In this embodiment, the system generates a warning command. At this time, the taillight display no longer simply shows a green countdown, but instead displays a warning message: the display screen turns yellow with a flashing pedestrian icon in the center and the words "Caution!" below the icon. This step achieves the visual transmission of dynamic obstacle warning information, enabling drivers of following vehicles to promptly perceive dynamic risks ahead.

[0100] In a preferred embodiment of the present invention, the warning display instructions include overlaying a flashing yellow exclamation mark icon on the countdown digit area of ​​the conventional display graphic, changing the display background color to yellow, or retaining the green light background but increasing the flashing frequency and supplementing it with brief text. The flashing frequency of the pedestrian icon is preferably 2 Hz.

[0101] S4: Real-time sensing of the braking response status of vehicles behind. If no braking action is detected, the warning display intensity is automatically upgraded.

[0102] In this embodiment, the system uses rear-facing radar to perceive the braking response status of the following vehicle in real time. Within 2 seconds of the warning being issued, the system continuously monitors changes in the following vehicle's speed. If it detects that the following vehicle's speed has decreased from 30 km / h to 20 km / h, it determines that the following vehicle has taken braking action, the warning is effective, and the system maintains the current warning display intensity. However, in another scenario, if the system detects that the following vehicle maintains its speed (e.g., 30 km / h) within 2 seconds of the warning being issued and no braking action is detected, it determines that the following vehicle may not have noticed the warning, and the system automatically upgrades the warning display intensity. This step forms a closed-loop feedback through the following vehicle's intent perception and adaptive warning upgrade mechanism, ensuring that the driver of the following vehicle can notice the warning in a timely manner, further improving active safety.

[0103] The adaptive warning upgrade includes increasing the flashing frequency, enlarging the icon size, increasing display brightness, or switching to a full-screen warning mode. Specifically, the flashing frequency of the pedestrian icon is increased from 2 Hz to 5 Hz to make the warning more eye-catching; the size of the pedestrian icon is increased from 100×100 pixels to 150×150 pixels to enhance visual impact; the brightness of the display is increased from 70% to 100% to ensure clear visibility in bright light; and the entire display is switched to a yellow full-screen flashing mode with a large pedestrian icon and the words "Caution!" displayed in the center for a strong visual warning.

[0104] In a preferred embodiment of this invention, the monitoring time window for sensing the following vehicle's intention is 2 to 5 seconds after the warning is issued. The braking action is determined when the following vehicle's speed decreases by more than a preset threshold, for example, a speed decrease of more than 10 km / h.

[0105] Upon seeing this warning, the driver of the following vehicle immediately understood the risk of a pedestrian crossing ahead. Even if their view was obstructed, they would prepare to brake in advance, thus greatly reducing the risk of a potential collision. After the pedestrian crossed, the system detected that the obstacle had left the danger zone, and the taillights of the vehicle in front automatically returned to display a green countdown.

[0106] This embodiment demonstrates that the present invention, by fusing V2X and onboard sensor information, can transmit real-time visualization of dynamic risks ahead to following vehicles, achieving beyond-line-of-sight warnings for blind spot risks at intersections and significantly improving active safety in complex scenarios. Simultaneously, the following vehicle intent perception and adaptive warning upgrade mechanism ensure the effectiveness of the warning, forming a closed-loop feedback loop that further enhances active safety.

[0107] like Figure 3 The image shown is an example of this embodiment. The display screen at the rear of the vehicle shows a yellow background with a flashing pedestrian icon, and adds a pedestrian phantom detected by the roadside unit in front.

[0108] Example 3 This embodiment discloses a multi-scenario taillight prompting method based on V2X multi-source information collaboration. This embodiment assumes an intersection where, due to special duty requirements, a traffic police officer manually directs vehicles in a certain lane to proceed at a red light. The vehicle in front receives a special clearance instruction from the traffic management center via V2X, or the in-vehicle system recognizes the traffic police officer's clear clearance gesture through a forward-facing camera combined with an image recognition algorithm.

[0109] like Figure 4 As shown, the method includes the following steps: S1: Obtain and parse the standard traffic light status message to get the traffic light status corresponding to the current lane; S2: Based on the traffic light status, it judges four conditions: lane matching, vehicle stationary, red light, and special release instruction. If all conditions are met, it is judged as a red light special release scenario, and the taillight information display function is automatically triggered. In this embodiment, the system determines whether the following conditions are met: lane matching, vehicle stationary (speed 0 km / h), red light status, and receipt of a special clearance instruction. Specifically, lane matching is confirmed by high-precision positioning to ensure the vehicle is in the target lane; vehicle stationary is confirmed by the vehicle speed sensor to indicate a speed of 0 km / h; the red light status is determined by parsing the current light color (red) from the SPAT message and obtaining the remaining countdown time; and receiving the special clearance instruction is triggered if either the V2X receives a special clearance instruction from the traffic management center or the forward-facing camera recognizes a traffic police officer's clearance gesture. This step ensures accurate identification of special clearance scenarios and avoids false triggering.

[0110] Furthermore, the process of recognizing a traffic police officer's clear hand signal by using a forward-facing camera and image recognition algorithms is divided into three stages: traffic police officer target detection, human posture estimation, and gesture classification.

[0111] The first stage is traffic police target detection. The central processing unit processes the video frames captured by the forward-facing camera in real time, uses target detection algorithms to detect human candidate boxes in the image, and further filters candidate targets for traffic police identity based on uniform color (dark blue or white shirt with fluorescent reflective vest) and reflective markings, filtering out non-traffic police targets such as pedestrians and cyclists, and marking targets that match the appearance characteristics of traffic police as candidate traffic police targets.

[0112] The second stage is human pose estimation. For candidate traffic police targets, the system calls the human key point detection algorithm to extract the coordinates of joint key points, including both shoulders, both elbows, and both wrists, and converts them into a normalized relative coordinate system with the traffic police's torso as a reference, eliminating the influence of target distance changes and camera perspective differences.

[0113] The third stage is the classification of clearance gestures. The system uses the normalized sequence of key points on both arms (relative coordinates of 6 key points: shoulders, elbows, and wrists) as feature input, and feeds it into the gesture classification model for temporal analysis to determine whether the current posture belongs to the clearance gesture category. Clearance gestures include the following typical actions: one arm extended laterally with the palm facing the target lane (indicating straight passage), one arm extended forward and then turning to the side (indicating turning to pass), and both arms extended laterally simultaneously (indicating two-way passage). When the classification confidence exceeds the preset recognition threshold, the system determines that the recognition is successful and outputs a clearance gesture type label.

[0114] Preferably, the system adopts a temporal smoothing strategy, which requires that the same release gesture category be detected in multiple consecutive frames and that the confidence level exceeds the threshold before the recognition result can be finally confirmed, thus preventing false triggering due to noise in a single frame or brief occlusion.

[0115] In practical applications, the traffic police gesture recognition results and the special release instructions received by V2X are logically fused: the V2X instructions take precedence; when the V2X does not receive a special release instruction but the camera recognizes the traffic police's release gesture, the gesture recognition result triggers the special display; when both conditions are met, a double confirmation method is used to increase the trigger confidence, reduce the risk of false triggering, and ensure that the system can respond reliably in scenarios such as incomplete V2X signal coverage or temporary traffic police dispatch.

[0116] S3: In the scenario of special permission to pass through a red light, generate a special permission instruction and drive the display screen to show the special permission information.

[0117] In this embodiment, the system generates a special passage instruction. The taillight display immediately switches to display the special passage information, namely a large, stable green right-pointing arrow, with "Traffic Police Directing Passage" clearly marked below the arrow. This display must be distinctly different from the regular red light countdown in color and graphics to avoid misunderstanding by following vehicles.

[0118] In this embodiment, the regular red light countdown is displayed with a red background and white numbers, while the special permission instruction is displayed with a green background, a green arrow, and white text, making them visually distinct. At this time, the system stops displaying the red light countdown or retains a countdown in a small area in the lower right corner of the screen for reference, but the special permission instruction is the primary indicator. This ensures that drivers of following vehicles clearly understand that the vehicle in front is legally starting under a special instruction and is not running a red light. This step achieves the visual transmission of the special permission instruction, ensuring that the legal driving intention of the vehicle in front under special circumstances is clearly communicated to following vehicles.

[0119] In a preferred embodiment of this practice, the permitted passage display instruction includes a green upward arrow or a green rightward arrow accompanied by the text "Traffic Police Proceed" or "Permitted to Pass." The permitted passage display instruction is significantly different from the regular red light countdown in terms of color, graphic type, and display layout. The green arrow is preferably 200×200 pixels in size.

[0120] When drivers of following vehicles see this display (Special Clearance Information), they are clearly aware that the vehicle in front started legally under the direction of traffic police, thus alleviating any concerns that the vehicle in front might run a red light. They can then choose to follow the vehicle in front and pass through the intersection in an orderly manner, avoiding traffic congestion and a reduction in traffic control efficiency. Once the vehicle in front has passed through the intersection, the system detects that the vehicle has crossed the stop line or the special clearance instruction has expired, the display automatically stops, and the taillights return to normal function.

[0121] This embodiment demonstrates that the present invention, by displaying special instructions such as traffic police commands through taillights, ensures that the legal driving intentions of the vehicle in front can be clearly communicated to the vehicle behind in special circumstances, such as emergency vehicle passage or traffic control, guiding the coordinated behavior of the vehicle behind, avoiding traffic chaos or violations caused by information asymmetry, and improving the overall compliance and efficiency of road network operation.

[0122] like Figure 4 The image shown is an example of this embodiment. The display screen at the rear of the vehicle shows a green right-pointing arrow with the text "Traffic Police Command", and a phantom image of a traffic police hand gesture is added next to the vehicle.

[0123] Example 4 This embodiment discloses a vehicle taillight multi-scenario prompting system based on V2X multi-source information collaboration, including: The status parsing module is configured to: acquire and parse standard traffic light status messages to obtain the traffic light status corresponding to the current lane; The scene judgment module is configured to: based on the traffic light status, combined with the vehicle's location information, real-time vehicle speed and driving direction, determine whether the vehicle meets multiple conditions at the same time, determine the corresponding scene based on the conditions met at the same time, and trigger the taillight information display function according to the scene. The taillight display module is configured to generate corresponding image display instructions based on the signal light status, and drive the taillight display screen to light up and display corresponding information in combination with different scenarios; The display termination module is configured to terminate the display and restore the taillights to normal function when it is detected that the vehicle has crossed the stop line or the signal light status has become irrelevant to the current scene.

[0124] Example 5 The purpose of this embodiment is to provide a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, performs the steps of the methods in Embodiments 1, 2, and 3.

[0125] Example 6 The purpose of this embodiment is to provide a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the steps of the methods in embodiments one, two, and three.

[0126] The steps and methods involved in the apparatus of Embodiments 5 and 6 above correspond to those in Embodiments 1, 2, and 3. For specific implementation details, please refer to the relevant descriptions in Embodiments 1, 2, and 3. The term "computer-readable storage medium" should be understood as a single medium or multiple media including one or more instruction sets; it should also be understood as including any medium capable of storing, encoding, or carrying an instruction set for execution by a processor and enabling the processor to perform any of the methods in this invention.

[0127] Those skilled in the art will understand that the modules or steps of the present invention described above can be implemented using general-purpose computer devices. Optionally, they can be implemented using computer-executable program code, thereby allowing them to be stored in a storage device for execution by a computer device, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. The present invention is not limited to any particular combination of hardware and software.

[0128] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0129] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A method for multi-scenario prompting of vehicle taillights based on V2X multi-source information collaboration, characterized in that, include: Obtain and parse the standard traffic light status message to get the traffic light status corresponding to the current lane; Based on the traffic light status, combined with the vehicle's location information, real-time speed, and driving direction, it is determined whether the vehicle simultaneously meets multiple conditions. Based on the conditions met simultaneously, the corresponding scenario is determined, and the taillight information display function is triggered according to the scenario. Based on the status of the traffic lights, corresponding image display instructions are generated, and combined with different scenarios, the taillight display screen is driven to light up and display the corresponding information. When the system detects that the vehicle has crossed the stop line or the traffic light status has become irrelevant to the current scene, the display will stop and the taillights will return to normal function.

2. The vehicle taillight multi-scenario prompting method based on V2X multi-source information collaboration as described in claim 1, characterized in that, The traffic light status includes at least the traffic light ID, current light color, remaining countdown time, and valid lane.

3. The vehicle taillight multi-scenario prompting method based on V2X multi-source information collaboration as described in claim 1, characterized in that, When the following conditions are met simultaneously: lane matching, vehicle is stationary and waiting, and the current traffic light color is red, it is determined to be a waiting passage scenario; when the following conditions are met simultaneously: lane matching, vehicle is stationary and waiting, the current traffic light color is green, and a dynamic obstacle warning is detected, it is determined to be a green light risk warning scenario; when the following conditions are met simultaneously: vehicle matching, vehicle is stationary and waiting, the current traffic light color is red, and a special clearance instruction is received, it is determined to be a red light special clearance scenario.

4. The vehicle taillight multi-scenario prompting method based on V2X multi-source information collaboration as described in claim 3, characterized in that, The lane matching specifically involves comparing the vehicle's location information with the valid lanes in the traffic light status to determine whether the vehicle is located within the lane sequence controlled by the traffic lights.

5. The vehicle taillight multi-scenario prompting method based on V2X multi-source information collaboration as described in claim 3, characterized in that, When waiting for traffic to pass, the taillight display shows the remaining countdown time against a red background.

6. The vehicle taillight multi-scenario prompting method based on V2X multi-source information collaboration as described in claim 3, characterized in that, In a green light risk warning scenario, the taillight display shows a flashing pedestrian icon against a yellow background, along with a warning text label.

7. The vehicle taillight multi-scenario prompting method based on V2X multi-source information collaboration as described in claim 3, characterized in that, In situations where traffic is allowed to proceed despite a red light, the taillight display shows a green arrow and text indicating that traffic police are directing traffic.

8. A vehicle taillight multi-scenario prompting system based on V2X multi-source information collaboration, characterized in that, include: The status parsing module is configured to: acquire and parse standard traffic light status messages to obtain the traffic light status corresponding to the current lane; The scene judgment module is configured to: based on the traffic light status, combined with the vehicle's location information, real-time vehicle speed and driving direction, determine whether the vehicle meets multiple conditions at the same time, determine the corresponding scene based on the conditions met at the same time, and trigger the taillight information display function according to the scene. The taillight display module is configured to generate corresponding image display instructions based on the signal light status, and drive the taillight display screen to light up and display corresponding information in combination with different scenarios; The display termination module is configured to terminate the display and restore the taillights to normal function when it is detected that the vehicle has crossed the stop line or the signal light status has become irrelevant to the current scene.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the steps in the vehicle taillight multi-scenario prompting method based on V2X multi-source information collaboration as described in any one of claims 1-7.

10. A computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the steps in the vehicle taillight multi-scenario prompting method based on V2X multi-source information collaboration as described in any one of claims 1-7.

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