A traffic accident congestion relief regulation method based on Internet of Vehicles

Abstract

The application discloses a traffic accident congestion relieving and regulating method based on Internet of Vehicles, and relates to the technical field of traffic, which is realized based on Internet of Vehicles technology and is aimed at sudden traffic accidents on roads, timely regulation and control are carried out according to different actual accident conditions according to vehicle accident information reported by accident vehicles, when the accident distance between accident positioning information and the parking line of the import road is small and the influence on other vehicles behind is large, the release strategy of the signal lamp is timely adjusted, when the accident distance is large and the influence on other vehicles behind is small, other vehicles are timely informed to avoid early, so as to be beneficial to improving the passing rate of other vehicles after the accident and relieving the congestion caused by the traffic accident.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of traffic technology, in particular to a traffic accident congestion relief control method based on Internet of Vehicles. BACKGROUND

[0002] With the deepening of the process of urbanization, the number of motor vehicles also increases, and the annual growth rate exceeds 10%, and the road conditions have gradually failed to meet the increasing traffic demand, so the vehicle congestion problem has followed.

[0003] In addition to the congestion caused by the large number of vehicles, sudden traffic accidents on the road are also an important reason for road congestion, especially during the morning and evening peak hours, some sudden traffic accidents will cause part of the lane to be congested, thereby causing the congestion of traffic to be aggravated, and seriously affecting the traffic efficiency of vehicles. SUMMARY

[0004] The present application proposes a traffic accident congestion relief control method based on Internet of Vehicles to solve the above problems and technical needs, and the technical scheme of the present application is as follows:

[0005] A traffic accident congestion relief control method based on Internet of Vehicles, the method comprising:

[0006] Obtaining vehicle accident information uploaded by an accident vehicle, the vehicle accident information comprising accident driving direction of the accident vehicle and accident positioning information of the accident location;

[0007] Determining an accident distance between the accident positioning information and a stop line of an entrance road along the accident driving direction;

[0008] When the accident distance is less than a distance threshold, controlling a signal lamp of an intersection along the accident driving direction to be adjusted from an original vehicle release strategy to an emergency vehicle release strategy;

[0009] When the accident distance reaches the distance threshold, the signal lamp of the intersection along the accident driving direction is kept unchanged, warning information carrying the vehicle accident information is sent to vehicles within a predetermined range, and the warning information is used to instruct other vehicles to avoid the accident vehicle.

[0010] Further technical solutions are that the method of controlling the signal lamp of the intersection along the accident driving direction to be adjusted to the emergency vehicle release strategy comprises:

[0011] When the accident distance is less than a first threshold, the signal lamp of the intersection is adjusted to a first emergency vehicle release strategy;

[0012] When the accident distance reaches the first threshold and is less than a second threshold, the signal lamp of the intersection is adjusted to a second emergency vehicle release strategy;

[0013] When the accident distance reaches the second threshold and is less than the distance threshold, the signal lamp of the intersection is adjusted to a third emergency vehicle release strategy.

[0014] A further technical solution is that the method for adjusting the signal lamp of the intersection to the first emergency vehicle release strategy comprises:

[0015] The signal lamp of the intersection switches the phase for releasing the straight vehicles in the accident travel direction in the original vehicle release strategy to stop releasing the straight vehicles in the accident travel direction and simultaneously release the straight vehicles and the left-turn vehicles in the opposite travel direction, and the release duration is equal to the release duration of the phase for releasing the straight vehicles in the accident travel direction in the original vehicle release strategy; after the release duration is reached, the phase is switched to simultaneously release the straight vehicles and the left-turn vehicles in the accident travel direction, and the release duration is equal to the sum of the release durations of the straight vehicles and the left-turn vehicles in the accident travel direction in the original vehicle release strategy.

[0016] A further technical solution is that the method for adjusting the signal lamp of the intersection to the second emergency vehicle release strategy comprises:

[0017] The signal lamp of the intersection simultaneously releases the straight vehicles and the left-turn vehicles in the accident travel direction after the release of the accident travel direction is ended, and the release duration is T1.

[0018] A further technical solution is that the vehicle accident information uploaded by the accident vehicle further comprises accident grade information, the release duration T1 is related to the accident grade information, and the higher the traffic accident severity indicated by the accident grade information, the greater the release duration T1.

[0019] A further technical solution is that the method for adjusting the signal lamp of the intersection to the third emergency vehicle release strategy comprises:

[0020] The signal lamp of the intersection prolongs the duration for releasing the straight vehicles and the left-turn vehicles in the accident travel direction to T2.

[0021] A further technical solution is that the vehicle accident information uploaded by the accident vehicle further comprises accident grade information, the release duration T2 is related to the accident grade information, and the higher the traffic accident severity indicated by the accident grade information, the greater the release duration T2.

[0022] A further technical solution is that the method further comprises:

[0023] The accident end information uploaded by the accident vehicle after the accident is handled is acquired, and the signal lamp of the intersection along the accident travel direction is controlled to recover from the emergency vehicle release strategy to the original vehicle release strategy according to the accident end information.

[0024] Further technical solutions are that the accident vehicle uploads vehicle accident information to the RSU device through the OBU device, the RSU device sends the vehicle accident information to the signal machine, the signal machine controls the signal lamp of the intersection, and the signal machine also sends warning information to the OBU device of the vehicle in the predetermined range through the RSU device.

[0025] The beneficial technical effects of the present application are:

[0026] The present application discloses a traffic accident congestion relief control method based on Internet of Vehicles, which is realized based on Internet of Vehicles technology. For a sudden traffic accident on the road, the release strategy of the signal lamp can be adjusted in time according to the vehicle accident information reported by the accident vehicle, or other vehicles can be notified in time to avoid, so as to improve the passing rate of other vehicles after the accident and relieve the congestion caused by the traffic accident. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic diagram of an application scene of the traffic accident congestion relief control method of the present application.

[0028] Figure 2 is a flowchart of the traffic accident congestion relief control method of an embodiment of the present application. DETAILED DESCRIPTION

[0029] The specific embodiments of the present application will be further described below in combination with the drawings.

[0030] The present application discloses a traffic accident congestion relief control method based on Internet of Vehicles, which is realized based on Internet of Vehicles technology. For a sudden traffic accident on the road, the release strategy of the signal lamp can be adjusted in time according to the vehicle accident information reported by the accident vehicle, or other vehicles can be notified in time to avoid, so as to improve the passing rate of other vehicles after the accident and relieve the congestion caused by the traffic accident. Figure 1 The vehicle running on the road is equipped with an OBU device 1 and interacts with an RSU device 2 on the roadside. The RSU device 2 is connected to a signal machine 3 of the intersection, and the signal machine 3 is also used to control the signal lamp 4 of the intersection. The method provided by the present application is a method executed by the signal machine 3 of the intersection, please refer to the flowchart shown in Figure 2 The method includes the following steps:

[0031] Step 1, obtaining the vehicle accident information uploaded by the accident vehicle, the vehicle accident information is the information uploaded by the accident vehicle after the accident, in an embodiment, the vehicle accident information includes the accident driving direction of the accident vehicle and the accident positioning information of the accident position.

[0032] In an embodiment, the accident vehicle of the traffic accident automatically uploads the vehicle accident information to the RSU device 2 through the OBU device when the accident occurs, and then the RSU device 2 sends the vehicle accident information to the signal machine 3.

[0033] Step 2, determining the accident distance D between the accident location information and the stop line of the approach road along the accident driving direction, since the accident location information and the accident driving direction are known, and the road parameters of the approach road are also set to be known, so the accident distance D can be directly calculated.

[0034] Step 3, when the accident distance D is less than the distance threshold L, it indicates that the accident distance D is close to the stop line of the approach road, and the accident vehicle handling the accident will have a greater impact on the subsequent vehicles, so the signal 3 needs to control the signal 4 of the intersection along the accident driving direction to adjust the original vehicle release strategy to the emergency vehicle release strategy, so as to alleviate the congestion caused by the traffic accident.

[0035] In this case, according to the different accident distance D, the switched emergency vehicle release strategy is also different, including: when the accident distance D is less than the first threshold L1, the signal of the intersection is controlled to adjust to the first emergency vehicle release strategy. When the accident distance D reaches the first threshold L1 and is less than the second threshold L2, the signal of the intersection is controlled to adjust to the second emergency vehicle release strategy. When the accident distance reaches the second threshold L2 and is less than the distance threshold L, the signal of the intersection is controlled to adjust to the third emergency vehicle release strategy.

[0036] (1) The first threshold L1 is generally designed according to the length of the solid line lane, which can be equal to the length of the solid line lane, or slightly larger than the length of the solid line lane, such as equal to the length of the solid line lane plus the total length of a vehicle length, which is taken as an example in the figure.

[0037] Therefore, when the accident distance D is less than the first threshold L1 and located in the area M1, the accident location information of the accident vehicle is very close to the stop line and generally located in the solid line lane or at the entrance of the solid line lane, which will cause the rear normally driving vehicles to be unable to avoid the accident vehicle, at this time, either traffic congestion of the rear vehicles will be caused, or the rear normally driving vehicles can only cross the solid line to enter the lane in the opposite driving direction to avoid the accident vehicle, resulting in safety hazards.

[0038] The method for adjusting the signal light of the intersection to the first emergency vehicle release strategy comprises: controlling the signal light of the intersection to switch the phase of releasing the straight vehicle of the accident driving direction in the original vehicle release strategy to stop releasing the straight vehicle of the accident driving direction and simultaneously release the straight vehicle and the left-turn vehicle of the opposite driving direction, and the release time T0 is equal to the release time of the phase of releasing the straight vehicle of the accident driving direction in the original vehicle release strategy. After the release time T0 is reached, the phase is switched to simultaneously release the left-turn vehicle and the straight vehicle of the accident driving direction, and the release time is equal to the sum of the release times of the straight vehicle and the left-turn vehicle of the accident driving direction in the original vehicle release strategy. The right-turn vehicle of the general intersection is not controlled by the signal light, and the accident driving direction is equivalent to the accident driving direction. Therefore, the embodiments only illustrate the release of the straight vehicle and the left-turn vehicle.

[0039] By simultaneously releasing the left-turn vehicle and the straight vehicle of the accident driving direction, the vehicle behind the accident vehicle can change the driving direction in time, avoiding congestion of a certain driving direction caused by the occupation of the accident vehicle. The release time of the left-turn vehicle and the straight vehicle of the accident driving direction is longer than that in the original vehicle release strategy, and more vehicles of the accident driving direction can be released.

[0040] (2) The second threshold L2 can be set by the user. When L1≤D<L2 and located in the region M2, it generally indicates that the accident vehicle has not entered the solid line lane, but the accident vehicle is also close to the parking line. The method for adjusting the signal light of the intersection to the second emergency vehicle release strategy comprises: controlling the signal light 4 of the intersection to additionally release the left-turn vehicle and the straight vehicle of the accident driving direction simultaneously after ending the release of the accident driving direction, and the release time is T1.

[0041] In one embodiment, the acquired vehicle accident information uploaded by the accident vehicle further comprises accident level information, which is used to indicate the severity of the traffic accident of the accident vehicle. For example, the accident level information includes a first-level accident indicating a high severity and a second-level accident indicating a low severity. The first-level accident is commonly a large collision accident such as rear-end collision, and the second-level accident is commonly a small collision accident such as scratching.

[0042] The release time T1 of the signal light for simultaneously releasing the left-turn vehicle and the straight vehicle of the accident driving direction is related to the accident level information. The higher the severity of the traffic accident indicated by the accident level information, the longer the release time T1.

[0043] In this case, the vehicle behind the accident vehicle needs to bypass the accident vehicle to drive into the required lane, and the rear vehicle will drive slowly. By increasing the single release time of all lanes in the accident release direction in addition to the normal release of the accident driving direction, the rear vehicle can timely switch lanes to bypass the accident vehicle, and it is also beneficial to increase the number of vehicles passing through all lanes in the accident direction, thereby relieving congestion. The higher the severity of the traffic accident, the longer the single release time is increased, and the more conducive to relieving congestion.

[0044] (3) When L2≤D<L and located in region M3, the method for controlling the signal lamp of the intersection to adjust to the third emergency vehicle release strategy includes: controlling the signal lamp of the intersection to extend the time of releasing left-turn vehicles and straight vehicles in the accident driving direction to T2.

[0045] Similarly, the accident vehicle information obtained by the vehicle also includes accident level information. The release time T2 in this embodiment is related to the accident level information. The higher the severity of the traffic accident indicated by the accident level information, the longer the release time T2.

[0046] Step 4, when the accident distance D reaches the distance threshold L and is located in region M4, it means that the accident distance D is far away from the stop line of the entrance road, and the accident vehicle has less impact on the subsequent vehicle driving when handling the accident. The signal machine 3 controls the signal lamp 4 of the intersection along the accident driving direction to keep the original vehicle release strategy unchanged, and sends warning information carrying vehicle accident information to vehicles within the predetermined range. The warning information is used to indicate other vehicles to avoid the accident vehicle in advance, so as to relieve the congestion caused by the traffic accident. Based on the structure of the vehicle-road cooperation network, the signal machine 3 sends the warning information to the OBU device of the vehicle within the predetermined range through the RSU device 2.

[0047] Before the accident vehicle handles the traffic accident, the signal lamp always works according to the emergency vehicle release strategy. When the accident vehicle handles the accident and resumes normal driving or is towed away, the accident end information is uploaded. Similarly, the accident vehicle automatically uploads the accident end information to the RSU device through the OBU device, and the RSU device 2 forwards the information to the signal machine 3 of the intersection. Then, the signal machine 3 controls the signal lamp of the intersection along the accident driving direction to restore the original vehicle release strategy from the emergency vehicle release strategy according to the accident end information.

[0048] The above only describes the preferred embodiments of the present application, and the present application is not limited to the above embodiments. It can be understood that other improvements and changes directly derived or thought by those skilled in the art without departing from the spirit and concept of the present application should be considered to be included in the protection scope of the present application.

Claims

1. A traffic congestion mitigation and regulation method based on vehicle networking, characterized in that, The method comprises: obtaining vehicle accident information uploaded by an accident vehicle, wherein the vehicle accident information comprises an accident driving direction of the accident vehicle and accident positioning information of an accident location; determining an accident distance between the accident positioning information and a stop line of an approach road along the accident driving direction; when the accident distance is less than a distance threshold, adjusting a signal lamp of an intersection entered along the accident driving direction from an original vehicle release strategy to an emergency vehicle release strategy; The method for adjusting the signal lamp of the intersection entered along the accident driving direction to the emergency vehicle release strategy comprises: when the accident distance is less than a first threshold, adjusting the signal lamp of the intersection to a first emergency vehicle release strategy; when the accident distance reaches the first threshold and is less than a second threshold, adjusting the signal lamp of the intersection to a second emergency vehicle release strategy; when the accident distance reaches the second threshold and is less than a distance threshold, adjusting the signal lamp of the intersection to a third emergency vehicle release strategy; The method for adjusting the signal lamp of the intersection to the first emergency vehicle release strategy comprises: controlling the signal lamp of the intersection to switch a phase for releasing straight vehicles in the accident driving direction in the original vehicle release strategy to stop releasing the straight vehicles in the accident driving direction and simultaneously release straight vehicles and left-turn vehicles in an opposite driving direction, and the release time is equal to that in the original vehicle release strategy; after the release time is reached, switching to simultaneously release the left-turn vehicles and the straight vehicles in the accident driving direction, and the release time is equal to the sum of the release times of the straight vehicles and the left-turn vehicles in the original vehicle release strategy; The method for adjusting the signal lamp of the intersection to the second emergency vehicle release strategy comprises: controlling the signal lamp of the intersection to simultaneously release the left-turn vehicles and the straight vehicles in the accident driving direction after ending the release of the accident driving direction, and the release time is T1; The method for adjusting the signal lamp of the intersection to the third emergency vehicle release strategy comprises: controlling the signal lamp of the intersection to extend the release time of the left-turn vehicles and the straight vehicles in the accident driving direction to T2; when the accident distance reaches the distance threshold, keeping the signal lamp of the intersection entered along the accident driving direction unchanged in the original vehicle release strategy, and sending warning information carrying the vehicle accident information to vehicles within a predetermined range, wherein the warning information is used to instruct other vehicles to avoid the accident vehicle.

2. The method of claim 1, wherein, The obtained vehicle accident information uploaded by the accident vehicle further comprises accident grade information, the release time T1 is related to the accident grade information, and the higher the traffic accident severity indicated by the accident grade information, the greater the release time T1.

3. The method of claim 1, wherein, The obtained vehicle accident information uploaded by the accident vehicle further comprises accident grade information, the release time T2 is related to the accident grade information, and the higher the traffic accident severity indicated by the accident grade information, the greater the release time T2.

4. The method of claim 1, wherein, The method further comprises: Obtaining accident end information uploaded by the accident vehicle after the accident is handled, and controlling the signal lamp of the intersection along the driving direction of the accident to recover from the emergency vehicle release strategy to the original vehicle release strategy according to the accident end information.

5. The method of claim 1, wherein, The accident vehicle uploads vehicle accident information to the RSU device through the OBU device, the RSU device sends the vehicle accident information to the signal machine, the signal machine controls the signal lamp of the intersection, and the signal machine also sends warning information to the OBU device of the vehicle in the predetermined range through the RSU device.

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