Traffic directing method and system for one-way two-lane road under one-lane traffic condition

Abstract

The application discloses a two-way two-lane road single-lane traffic condition traffic command method and system, and belongs to the technical field of traffic management control. The command system comprises two command units arranged at the two ends of a to-be-coordinated road section respectively. Each command unit comprises a sensing module for detecting vehicles, a decision and control module connected with the sensing module and receiving detection data of the sensing module, a command signal output module for outputting traffic command signals, a manual operation module connected with the decision and control module and used for receiving external operation instructions to adjust vehicle counting or switch the system working mode, a wireless communication module connected with the decision and control module and used for realizing data communication between the two command units, and a power supply module. The application can realize smooth traffic of two-way traffic on a single-phase traffic road section, reduce the working difficulty of on-site manual command, and effectively improve the on-site traffic command efficiency.

Description

Technical Field

[0001] This invention relates to a traffic control method and system for single-lane traffic conditions on a two-way two-lane road, belonging to the field of traffic management and control technology. Background Technology

[0002] In some mountainous areas or narrow sections of two-lane roads, when an accident occurs in one lane or when it needs maintenance, repair, or emergency response, the remaining lane must be used to ensure two-way traffic. This requires coordinating and directing vehicles to alternate between the two directions in an orderly manner, preventing vehicles traveling in opposite directions from entering a single lane simultaneously and causing a complete road blockage.

[0003] However, there is currently a lack of convenient means to coordinate and direct traffic in this way, especially when the two entrances to the road are not visible to each other, making coordination and directing even more difficult. It can only be accomplished through a combination of manpower and wireless communication.

[0004] Such situations often lead to problems such as high workload for commanders and low command efficiency. Therefore, this invention, "Traffic Command Method and System under Single-Lane Traffic Conditions on Two-Way Roads," is proposed. Through intelligent sensing, intelligent decision-making, and sound and light signals, it realizes automatic alternating traffic command in one-way traffic scenarios on two-way roads, improving on-site work efficiency and improving the working conditions of on-site staff. Summary of the Invention

[0005] (a) Technical problems to be solved The technical problem to be solved by this invention is to address the lack of emergency traffic control technology and equipment under the existing two-way two-lane road single-lane traffic conditions, which leads to difficulties in traffic control, high workload, and low command efficiency.

[0006] (II) Technical Solution To address the aforementioned technical problems, this invention provides a traffic control method for a two-lane road with single-lane traffic conditions. This method is applied to a two-lane road where one lane is closed, and traffic is flowing in a single lane. It involves alternating traffic control by two control units deployed at both ends of the road segment to be coordinated. The method includes the following steps, executed collaboratively by the two control units: S1. Traffic control mode: One of the command units executes the traffic control mode, which includes: setting its own traffic signal to allow vehicles at its end to enter the road segment, starting to count the vehicles entering the road segment, and sending the count information of the entering vehicles to another command unit. S2, Traffic Waiting Mode: Another command unit executes a traffic waiting mode, which includes: setting its own traffic signal to prohibit vehicles at its end from entering the road segment, continuously monitoring and reporting to the command unit executing the traffic control mode the number of vehicles leaving the road segment from that end; S3. Mode switching condition judgment: The command unit executing the passage command mode determines whether to switch to the execution passage waiting mode based on preset switching conditions; S4. Switching Trigger: When the command unit executing the traffic control mode determines that the switching conditions are met, it sets its own traffic signal to a state that prohibits vehicles at its end from entering the road segment, stops counting the entering vehicles, and notifies the command unit executing the traffic waiting mode. S5. Information Clearing and Role Switching: After receiving the notification, the command unit executing the traffic waiting mode continues to report the cumulative number of departing vehicles until the reported cumulative number equals the total number of entering vehicles sent by the command unit executing the traffic command mode. At this point, the two command units switch roles, with the original command unit executing the traffic waiting mode becoming the command unit executing the traffic command mode and implementing the traffic command mode, and the original command unit executing the traffic command mode becoming the command unit executing the traffic waiting mode and implementing the traffic waiting mode. This cycle is repeated to achieve alternating passage of two-way traffic on a single-vehicle road segment.

[0007] This method uses two command units deployed at both ends of a single-lane road to coordinate and automatically switch traffic modes by counting and verifying vehicles. It can achieve orderly alternation of two-way traffic without the need for on-site manual command, which not only solves the problem of visual coordination between the two ends of long-distance single-lane road sections, but also significantly reduces the workload of command personnel, effectively improves traffic command efficiency, avoids congestion caused by vehicles from both directions entering the single-lane road section at the same time, and ensures the traffic order and efficiency of semi-closed roads.

[0008] Furthermore, in S3, the preset switching conditions include: no new vehicle is detected entering within a first preset time period, or the cumulative passage time has reached a second preset time period. This addition of a time-based mode switching trigger condition can address situations with sparse traffic flow where no new vehicles enter, allowing for timely switching of right-of-way to prevent vehicles in the other direction from waiting unnecessarily for extended periods. It can also ensure a relatively balanced passage opportunity for both directions in scenarios with relatively dense traffic in both directions, preventing one direction from occupying the road for extended periods and improving overall fairness and smoothness of passage.

[0009] Furthermore, during the traffic control mode or the traffic waiting mode, if either command unit receives a manual instruction to increase or decrease the vehicle count, it adjusts its own vehicle count according to the instruction and synchronizes the adjusted result to the other command unit via wireless communication. This adds the function of manual intervention to adjust the count, which can correct for special cases where the sensing module misidentifies or misses vehicles, improving counting accuracy and avoiding mode switching confusion caused by counting errors. Simultaneously, the synchronization mechanism ensures data consistency between the two command units, maintains system operational stability, and enhances the solution's adaptability to complex field scenarios.

[0010] Furthermore, in the traffic waiting mode, the command unit executing the mode calculates and dynamically displays the number of vehicles remaining to pass in the current road segment based on the total number of incoming vehicles and the total number of outgoing vehicles reported by the unit itself. By dynamically displaying the number of vehicles remaining to pass in the road segment, on-site staff and drivers can intuitively grasp the current road traffic progress, which not only facilitates manual supervision of the system's operation but also improves the driving experience and reduces information uncertainty during the waiting process. On the other hand, the present invention also provides a traffic control system for implementing the above-described method under single-lane traffic conditions on a two-way two-lane road, comprising two control units respectively deployed at both ends of the road segment to be coordinated, each of the control units comprising: A perception module is used to detect and identify vehicles entering and leaving the road section; The decision and control module is connected to the sensing module and receives its detection data, and is used to execute the passage command method as described in claim 1; A traffic control signal output module, connected to the decision and control module, is used to output traffic control signals corresponding to the traffic control mode or the traffic waiting mode; The manual operation module, connected to the decision and control module, is used to receive external operation commands to adjust the vehicle count or switch the system operating mode. The wireless communication module, connected to the decision and control module, is used to enable data communication between the two command units; And, the power supply module; The decision-making and control modules of the two command units work together to enable the two command units to alternately enter the traffic command mode and the traffic waiting mode, so as to realize the automated command of the alternating and orderly passage of vehicles in both directions.

[0011] The above system architecture constructs a modular and complete traffic command system. The two command units are independently configured with modules such as perception, decision-making, signal output, and communication. Automated alternating command can be achieved with only wireless communication coordination. It is easy to deploy, does not require large-scale modification of existing road facilities, and is adapted to the rapid deployment needs of various temporary one-way traffic scenarios. It can completely replace the traditional human command mode and ensure the stable implementation of the aforementioned command methods from the hardware and architecture levels.

[0012] Furthermore, the perception module includes at least a laterally deployed LiDAR and / or camera, whose installation position and orientation are configured to scan or photograph a single lane with one-way traffic from the side to obtain the outline and image information of passing vehicles. The decision and control module is used to process the outline and image information, filter interfering targets, and identify and count the number and direction of travel of passing vehicles. Using a laterally deployed LiDAR and / or camera to scan or photograph a single lane with one-way traffic from the side does not interfere with normal traffic flow, and can more accurately obtain vehicle characteristics, improving the accuracy of vehicle identification and counting, effectively filtering out interfering targets such as pedestrians and non-motorized vehicles, reducing counting errors, and providing a reliable data foundation for the decision module.

[0013] Furthermore, the command signal output module includes a speaker and a display, with traffic lights and LED text displays on both sides of the display. The simultaneous configuration of a speaker and a display with traffic lights and text displays allows for the transmission of command information to drivers through both visual and auditory means, adapting to different weather conditions and traffic speeds, improving the recognizability of command signals, and reducing the probability of information transmission errors.

[0014] Furthermore, when one signal light on the display is green, the other signal light is red, and the text display screen and speaker output prompts corresponding to the traffic status. The signal light states on both sides of the same display are mutually exclusive, conforming to the waiting and passage logic of two-way vehicles traveling in a single lane. The correspondence between text and sound prompts and signal light states further enhances the accuracy of command information and avoids driver misunderstanding of signals.

[0015] Furthermore, the power supply module includes solar panels and batteries to provide power to each command unit. This solar-powered battery-based power supply solution eliminates the need for connection to the municipal power grid, making it suitable for challenging road environments such as mountainous and suburban areas where cabling is difficult. It is energy-efficient and significantly reduces deployment difficulty and cost, enhancing system deployment flexibility and meeting the rapid deployment needs of emergency repairs and maintenance.

[0016] Furthermore, the traffic control system includes the following operating modes: an automatic mode for automatically executing the method described in claim 1, a manual mode for directly controlling the command signal output module, and a no-entry mode for prohibiting all vehicles from passing. These modes are switched via the manual operation module. Multiple operating modes are provided, allowing for flexible switching based on actual on-site needs: the automatic mode adapts to routine traffic scenarios, enabling unattended automatic control; the manual mode meets the needs of manual adjustment under special conditions; and the no-entry mode adapts to emergency road closure scenarios. Mode switching can be completed through the manual module, significantly improving the system's adaptability to different on-site conditions and enhancing its practicality.

[0017] (III) Beneficial Effects The above-described technical solution of the present invention has the following advantages: The command method of this invention uses two command units deployed at both ends of a single-lane road to cooperate and automatically switch traffic modes by vehicle counting and verification. It can complete the alternating and orderly passage of two-way traffic without the need for on-site manual command. This not only solves the problem of visual coordination between the two ends of long-distance single-lane road sections, but also significantly reduces the workload of command personnel, effectively improves traffic command efficiency, avoids the congestion problem caused by two-way vehicles entering a single-lane road section at the same time, and ensures the traffic order and efficiency of semi-closed roads.

[0018] The command system architecture of this invention constructs a modular and complete traffic command system. The two command units at both ends are independently configured with modules such as perception, decision-making, signal output, and communication. Automated alternating command can be achieved with only wireless communication coordination. It is convenient to deploy, does not require large-scale modification of existing road facilities, and is adapted to the rapid deployment needs of various temporary one-way traffic scenarios. It can completely replace the traditional human command mode and ensure the stable implementation of the aforementioned command method from the hardware and architecture levels.

[0019] This invention provides an automated and intelligent on-site traffic control device for one-way traffic sections formed by maintenance and emergency repairs on two-way two-lane roads. Intelligent vehicle entry and exit detection and decision-making prevent traffic conflicts between opposing traffic. Automatic wireless information exchange between the two command units ensures coordination between the two ends of long one-way traffic sections, effectively reducing the difficulty of coordination and command. Automated one-way traffic control effectively reduces the waste of human resources on-site, especially at disaster relief sites.

[0020] In addition to the technical problems solved by the present invention, the technical features of the technical solutions constituted by the present invention, and the advantages brought about by the technical features of these technical solutions as described above, other technical features of the present invention and the advantages brought about by these technical features will be further explained in conjunction with the accompanying drawings. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram showing the layout of the two command units of the command system of the present invention at both ends of the road section to be coordinated.

[0023] Figure 2 This is a schematic diagram of the system structure of the command unit of the present invention.

[0024] Figure 3 This is a schematic diagram illustrating the switching of the working modes of the command system of the present invention.

[0025] Figure 4 This is a schematic flowchart of the traffic decision-making mode (traffic command mode) of the command method of the present invention.

[0026] Figure 5 This is a flowchart illustrating the waiting decision mode (passage waiting mode) of the command method of the present invention.

[0027] Figure 6 This is a schematic diagram of the front view of the command unit of the present invention.

[0028] Figure 7 This is a schematic side view of the command unit of the present invention.

[0029] In the diagram: 1. Sensing module; 2. Speaker; 3. Display; 4. Signal light; 5. Display screen; 6. Manual operation module; 7. Wireless communication module; 8. Solar panel; 9. Battery; 10. Column. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0032] Example 1 A traffic control system for single-lane traffic conditions on a two-way, two-lane road is applicable when one direction of travel is closed, allowing only single-lane traffic. It includes two control units (i.e., device A and device B in the attached diagram, or device A and device B) respectively deployed at both ends of the road segment to be coordinated. Figure 6-7 As shown, each of the command units includes: The perception module 1 is used to detect and identify vehicles entering and exiting the road segment to be coordinated; the perception module includes at least a side-mounted lidar (using a single-line lidar with a measurement range of 50 meters) and / or a camera, the installation position and orientation of which are configured to perform side scanning or imaging on a single lane of one-way traffic to obtain the outline and image information of passing vehicles.

[0033] The decision and control module (not shown in the attached diagram, but may be integrated into the housing of display 3 or installed separately) connects to the sensing module and receives its detection data. It processes the contour and image information, filters out interfering targets, identifies and counts the number and direction of passing vehicles, and performs vehicle counting, mode switching condition judgment, traffic mode switching, and wireless data interaction. This completes the analysis of detection data and traffic control decisions. The decision and control modules of the two command units work collaboratively, allowing the two command units to alternately enter a traffic control mode (in which vehicles are directed to pass) and a traffic waiting mode (in which vehicles are directed to wait), thereby achieving automated command of the alternating and orderly passage of vehicles in both directions.

[0034] A traffic signal output module, connected to the decision and control module, is used to output traffic control signals in either a traffic control mode or a traffic waiting mode. The traffic control signals in the traffic control mode and the traffic waiting mode respectively instruct vehicles to proceed or wait. The traffic signal output module includes a speaker 2 and a display 3. The display 3 has LED signal lights 4 and LED text display screens 5 on both sides. When one signal light 4 on one side of the display 3 is green, the other signal light 4 is red, and the text display screen 5 and the speaker 2 output prompt information corresponding to the traffic status. More specifically, the display 3 has two sides, one facing the direction of oncoming traffic from the command unit's location and the other facing the direction of departure from the road section. Each side is independently equipped with a signal light 4 and an LED text display screen 5. When the command unit executes the traffic control mode and allows vehicles to enter the road section, the signal light 4 facing the direction of oncoming traffic is green, and the signal light 4 facing the direction of departure is red. The speaker 2 and the text display screens on both sides output prompt information corresponding to the current traffic status of the command unit. When the command unit executes the traffic waiting mode and prohibits vehicles from entering the road section, the signal light 4 facing the direction of oncoming traffic is red, and the signal light 4 facing the direction of departure is green. The text display screen 5 and the speaker 2 output corresponding prompt information simultaneously. The text and voice output of the prohibition prompt eliminate ambiguity and adapt to the conventional scenario of a single command unit deployed at a single end.

[0035] The manual operation module 6, connected to the decision and control module, receives external operation commands to adjust vehicle counting or switch system operating modes. It uses buttons to set automatic, manual, and no-entry modes, and monitors the device's operation via a miniature display screen 5. The manual operation module 6 is primarily a manual control panel, designed to handle special on-site situations. It includes manual control of traffic lights, no-entry, manual addition of vehicle counts to road sections, and manual reduction of vehicle counts to road sections, corresponding to situations such as sensor module 1 malfunction, road closure in both directions, emergency vehicles entering and temporarily remaining, and emergency vehicles subsequently leaving, allowing for flexible handling of various on-site situations.

[0036] Wireless communication module 7 is connected to the decision and control module and is used to realize data communication between the two command units. For example, a Lora point-to-point communication module with a communication distance of 5km can be used to ensure communication between the two command units. At the same time, a 4G / 5G communication module can be installed to adapt to different scenarios.

[0037] The power supply module includes a solar panel 8 and a battery 9, which are used to provide power to each command unit.

[0038] The column 10 supports various modules, including the sensing module 1, decision-making and control module, command signal output module, manual operation module 6, wireless communication module 7, and power supply module. The column 10 also has a base with casters at its lower end, making the entire command unit a mobile device that is easy to move and flexibly arrange. The battery 9 and solar panel 8 of the power supply module are integrated into the bottom counterweight base and top of the column 10, respectively. Power management circuitry is also typically integrated into the base. The sensing module 1 is mounted on the column 10 below the dual-display monitor 3 and protrudes from the front of the monitor 3. Figure 6-7 As shown, this is to distinguish the front and back of display 3.

[0039] The traffic control system operates in three modes: an automatic mode for automatically controlling the traffic control signal output module, a manual mode for directly controlling the signal output module, and a no-entry mode for prohibiting all vehicles from passing. The manual operation module switches between these modes. In manual mode, the signal output module can be directly controlled to handle special situations such as sensor misses, priority passage for emergency vehicles, or abnormal vehicle congestion. The result of this operation is synchronized to the command unit at the other end via a wireless communication module. In automatic mode, the decision-making and control module operates according to the method described in Embodiment 2.

[0040] It should be noted that the aforementioned sensing module 1, decision and control module, command signal output module, manual operation module 6, wireless communication module 7, and power supply module are all technologies that can be used with existing technologies. For example, the decision and control module can use a PLC (Programmable Logic Controller), an industrial embedded control board (embedded system that receives 360° scanning signals from the LiDAR, builds a map through SLAM, and identifies targets passing from the side), an edge computing gateway, and a microcontroller. The sensing module 1 is a conventional LiDAR and camera. The command signal output module is a conventional speaker 2 + display 3 (with traffic lights and a display screen 5). The manual operation module 6 can be a conventional physical button + LCD local operation screen (or a wireless handheld controller or a remote WEB / mini-program control terminal). The wireless communication module can be a conventional 4G / 5G public network module, LoRa low-power wireless module, etc. The power supply module is a conventional solar panel 8 and battery 9. The specific installation and circuit connection control between them can be achieved using existing technologies, and will not be described in detail here.

[0041] Example 2 like Figure 1-5As shown, a traffic control method for a two-way two-lane road under single-lane traffic conditions is applied to the alternating traffic control of two command units deployed at both ends of the road segment to be coordinated when one lane of the two-way two-lane road is closed and single-lane traffic is allowed. The method includes the following steps executed collaboratively by the two command units: S1. Traffic Control Mode (i.e., the traffic decision mode in the attached diagram): One of the command units executes the traffic control mode, which includes: setting its own traffic signal to allow vehicles at its end to enter the road segment, simultaneously starting to count the vehicles entering the road segment, and sending the count information of the entering vehicles to another command unit; specifically, the command unit executing the traffic control mode outputs a green light on the front and a red light on the back of its command signal, allowing vehicles to enter the one-way traffic segment; in the traffic control mode, if a vehicle is detected entering through the sensing module, the count value of the entering vehicle is incremented by one, and the updated count value is notified to the other command unit in the traffic waiting mode in real time or periodically; S2. Passage Waiting Mode (i.e., the passage decision mode in the attached diagram): Another command unit executes the passage waiting mode, which includes: setting its own traffic signal to prohibit vehicles at its end from entering the road segment, continuously monitoring and reporting to the command unit executing the passage command mode the number of vehicles leaving the road segment from that end; and the command unit executing the passage waiting mode calculates and dynamically displays the number of vehicles remaining to pass in the current road segment based on the total number of vehicles entering and the total number of vehicles leaving reported by itself. During the traffic control mode or the traffic waiting mode, if any command unit receives an instruction to increase or decrease the vehicle count through manual operation, it adjusts the vehicle count value of its own unit according to the instruction and synchronizes the adjusted result to another command unit via wireless communication.

[0042] S3. Mode switching condition judgment: The command unit executing the passage command mode determines whether to switch to the passage waiting mode based on preset switching conditions; the preset switching conditions include: no new vehicle is detected entering within the first preset time period (i.e., T_gap time in the attached figure), or the cumulative passage time has reached (or is greater than) the second preset time period (i.e., T_max time in the attached figure). S4. Switching Trigger: When the command unit executing the traffic control mode determines that the switching conditions are met, it sets its own traffic signal to prohibit vehicles at its end from entering the road segment, stops counting the entering vehicles, and notifies the controlled unit; specifically, the command unit that was originally executing the traffic control mode outputs a red light on the front and a green light on the back, prohibiting vehicles from entering the one-way traffic segment and waiting for the road segment to be cleared of vehicles; S5. Information Clearing and Role Switching: After receiving the notification, the command unit executing the traffic waiting mode continues to report the cumulative number of departing vehicles until the reported cumulative number equals the total number of entering vehicles sent by the command unit executing the traffic command mode. At this point, the two command units switch roles, with the original command unit executing the traffic waiting mode becoming the command unit executing the traffic command mode and implementing the traffic command mode, and the original command unit executing the traffic command mode becoming the command unit executing the traffic waiting mode and implementing the traffic waiting mode. This cycle is repeated to achieve alternating passage of two-way traffic on a single-vehicle road segment.

[0043] More specifically, in S3, if the trigger condition of no new vehicle entering within the first preset time period is met first, a switchover is triggered. If the first preset time condition is not met when the cumulative passage time reaches the target, the switchover is triggered based on the cumulative passage time reaching the target. A switchover is executed as long as either condition is met. Preferably, the first preset time period (waiting trigger time for no new vehicle entering) is 20 seconds to 3 minutes. Further design distinctions are possible as follows: In most mountainous areas with narrow two-way lanes, traffic flow is very low, and vehicle gaps are relatively large during off-peak hours. A setting of 20 seconds to 1 minute is usually sufficient: when no new vehicle enters in that direction for 20 seconds to 1 minute, it is assumed that there are no vehicles waiting to pass in the current direction, triggering a switchover to allow passage in the opposite direction, avoiding unnecessary waiting and improving traffic efficiency. For short-term peak periods such as near town entrances / exits or market days, the time can be adjusted to 1 to 3 minutes to address intermittent traffic pauses, avoid premature erroneous switchovers, and balance waiting times in both directions. The second preset duration (the maximum duration for continuous one-way traffic release) is 3-15 minutes to prevent a continuous influx of traffic in one direction, which could lead to excessively long waiting times in the opposite direction and cause congestion. The setting logic is adjusted in conjunction with the road segment length. If the remaining single-lane road section after closure is less than 1 kilometer in length (the length of most temporary construction / accident handling road sections in mountainous areas), set it to 3-8 minutes: allow a maximum of the corresponding time of traffic flow at one time, ensuring both single-pass efficiency and preventing excessive waiting time for oncoming traffic.

[0044] If the road segment is longer than 1 kilometer (some long road segments in mountainous areas that have been reconstructed and expanded to allow half-width traffic), set the timer to 8-15 minutes. This is to accommodate the characteristics of long road segments that can accommodate more vehicles in a single pass, reduce unnecessary switching frequency, and ensure fairness in waiting for both directions.

[0045] Both durations can be flexibly adjusted via the system's manual operation module based on actual traffic flow and road length, fully adapting to the ever-changing temporary passage needs of narrow mountain roads.

[0046] Example 3 This embodiment provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the traffic control method under single-lane traffic conditions on a two-way two-lane road as described in Embodiment 2.

[0047] Furthermore, in the description of the invention, unless otherwise stated, the use of terms such as “center,” “upper,” “lower,” “left,” “right,” “vertical,” “horizontal,” “inner,” and “outer” to indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings is merely for the convenience of describing the invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0048] The specific embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A traffic control method for single-lane traffic conditions on a two-way two-lane road, characterized in that: When one lane of a two-lane road is closed, and traffic is flowing in a single lane, the method involves alternating traffic control by two command units deployed at both ends of the road segment to be coordinated. The method includes the following steps, which are executed collaboratively by the two command units: S1. Traffic control mode: One of the command units executes the traffic control mode, which includes: setting its own traffic signal to allow vehicles at its end to enter the road segment, starting to count the vehicles entering the road segment, and sending the count information of the entering vehicles to another command unit. S2, Traffic Waiting Mode: Another command unit executes a traffic waiting mode, which includes: setting its own traffic signal to prohibit vehicles at its end from entering the road segment, continuously monitoring and reporting to the command unit executing the traffic control mode the number of vehicles leaving the road segment from that end; S3. Mode switching condition judgment: The command unit executing the passage command mode determines whether to switch to the execution passage waiting mode based on preset switching conditions; S4. Switching Trigger: When the command unit executing the traffic control mode determines that the switching conditions are met, it sets its own traffic signal to a state that prohibits vehicles at its end from entering the road segment, stops counting the entering vehicles, and notifies the command unit executing the traffic waiting mode. S5. Information Clearing and Role Switching: After receiving the notification, the command unit executing the traffic waiting mode continues to report the cumulative number of departing vehicles until the reported cumulative number equals the total number of entering vehicles sent by the command unit executing the traffic command mode. At this point, the two command units switch roles, with the original command unit executing the traffic waiting mode becoming the command unit executing the traffic command mode and implementing the traffic command mode, and the original command unit executing the traffic command mode becoming the command unit executing the traffic waiting mode and implementing the traffic waiting mode. This cycle is repeated to achieve alternating passage of two-way traffic on a single-vehicle road segment.

2. The traffic control method according to claim 1, characterized in that: In S3, the preset switching conditions include: no new vehicle is detected entering within a first preset time period, or the cumulative passage time has reached a second preset time period.

3. The traffic control method according to claim 1, characterized in that: During the traffic control mode or the traffic waiting mode, if any command unit receives an instruction to increase or decrease the vehicle count through manual operation, it adjusts the vehicle count value of its own unit according to the instruction and synchronizes the adjusted result to another command unit via wireless communication.

4. The traffic control method according to claim 1, characterized in that: In the traffic waiting mode, the command unit executing the traffic waiting mode calculates and dynamically displays the number of vehicles remaining to pass in the current road segment based on the total number of vehicles entering and the total number of vehicles exiting reported by itself.

5. A traffic control system for implementing the method of any one of claims 1 to 4 under single-lane traffic conditions on a two-way two-lane road, characterized in that: This includes two command units deployed at both ends of the road segment to be coordinated, each command unit comprising: A perception module is used to detect and identify vehicles entering and leaving the road section; The decision and control module is connected to the sensing module and receives its detection data, and is used to execute the passage command method as described in claim 1; A traffic control signal output module, connected to the decision and control module, is used to output traffic control signals corresponding to the traffic control mode or the traffic waiting mode; The manual operation module, connected to the decision and control module, is used to receive external operation commands to adjust the vehicle count or switch the system operating mode. The wireless communication module, connected to the decision and control module, is used to enable data communication between the two command units; And, the power supply module; The decision-making and control modules of the two command units work together to enable the two command units to alternately enter the traffic command mode and the traffic waiting mode, so as to realize the automated command of the alternating and orderly passage of vehicles in both directions.

6. The traffic control system according to claim 5, characterized in that: The perception module includes at least a side-mounted lidar and / or camera, whose installation position and orientation are configured to perform side scanning or imaging of a single lane for one-way traffic in order to obtain the outline and image information of passing vehicles; the decision and control module is used to process the outline and image information, filter out interfering targets, and identify and count the number and direction of travel of passing vehicles.

7. The traffic control system according to claim 5, characterized in that: The command signal output module includes a speaker and a display, with red and green signal lights and LED text display screens on both the front and back of the display.

8. The traffic control system according to claim 7, characterized in that: When one of the indicator lights on the display is green, the other indicator light is red, and the text display screen and speaker output prompt information corresponding to the passage status.

9. The traffic control system according to claim 5, characterized in that: The power supply module includes solar panels and batteries, which are used to provide power to each command unit.

10. The traffic control system according to claim 5, characterized in that, The operating modes include: an automatic mode for automatically executing the method described in claim 1, a manual mode for directly controlling the command signal output module, and a no-passing mode for prohibiting all vehicles from passing, and the mode switching is performed through the manual operation module.

Images