A Road Traffic Control Method and System

Abstract

The present invention is applicable to the field of computers, and provides a road traffic control method and system. By obtaining real-time traffic change information on the road and the real-time positions of vehicles, and obtaining the navigation routes selected by the in-vehicle terminal; along with the movement of the vehicles and the change information of the traffic conditions, plan multiple updated navigation routes from the current position of the vehicle to the destination, and analyze the travel times of the multiple updated navigation routes and the currently selected navigation route; timely recommend to the in-vehicle terminal the updated navigation route with the shortest travel time. This enables the navigation route to be changed along with the current road conditions, allowing the vehicle to avoid congested sections and reach the destination at the fastest speed. Through the re-planning of the navigation route, the vehicles can also be diverted to different sections, thereby achieving the dynamic allocation of congested sections and normal sections, improving the effective utilization rate of urban roads, and enabling the urban traffic system to operate in a healthy state.

Description

Technical Field

[0001] The present invention belongs to the field of computers, and particularly relates to a road traffic control method and system. Background Art

[0002] Road traffic control refers to the general term for relevant traffic management departments to plan, organize, direct, coordinate, control, etc. the road traffic by using modern management theories and advanced science and technologies according to technical specifications around the basic goals of orderly, safe and unobstructed road traffic. Traffic control, also known as traffic signal control or urban traffic control, is to rely on manual command or use traffic signal control facilities to direct the passage of vehicles and pedestrians according to the changing characteristics of traffic.

[0003] In the existing road traffic control signal systems and in the existing auxiliary road traffic control systems, such as intersection traffic lights and red light running camera systems, camera monitoring systems, electronic sign information announcements, street lights, radio announcements, etc., they are all used for the control of traffic at plane intersections or within a local range, and are set at specific locations; when the existing various vehicle positioning systems are applied to highway traffic, a navigator is usually set on the vehicle to provide guidance for the vehicle on the starting and ending routes of travel; the above-mentioned existing technologies cannot realize the long-distance, continuous and dynamic display of the occupancy situation of the linear road carriageway, the driving state of vehicles and the vehicle distance.

[0004] The existing traffic lights and navigation methods are both fixed. For the real-time changes of the road, the navigation cannot timely remind the driver or change the selected navigation route according to the changes of road traffic, which results in congestion in some sections and smoothness in some sections during certain time periods, resulting in poor traffic efficiency, low effective utilization rate of urban roads, and the existing traffic lights also do not have the ability to intelligently adjust and dredge traffic according to the changes of road traffic flow. Summary of the Invention

[0005] The embodiments of the present invention provide a road traffic control method and system, aiming to solve the problems that the existing traffic lights and navigation methods are both fixed, and the navigation cannot change the navigation route according to the changes of road traffic, resulting in poor traffic efficiency and low effective utilization rate of urban roads.

[0006] The embodiments of the present invention are implemented as follows. On the one hand, a road traffic control method includes:

[0007] Obtain the real-time traffic change information on the road and the real-time positions of vehicles;

[0008] According to the positions of the vehicles, plan multiple navigation routes;

[0009] Analyze the travel times of multiple navigation routes based on real-time traffic change information, and send the analysis results to the in-vehicle terminal;

[0010] Obtain the navigation route selected by the in-vehicle terminal, and update the real-time position of the vehicle on this navigation route;

[0011] As the vehicle moves and traffic conditions change, when the vehicle is traveling on the navigation route, plan multiple updated navigation routes from the vehicle's current position to the destination, and analyze the travel times of the multiple updated navigation routes and the currently selected navigation route;

[0012] Judge whether the travel time of the multiple updated navigation routes is less than the travel time of the currently selected navigation route;

[0013] When the travel time of one of the multiple updated navigation routes is less than the travel time of the currently selected navigation route, send a reminder message to update the navigation route to the in-vehicle terminal, and automatically replace the currently selected navigation route with the updated navigation route with the shortest travel time.

[0014] As an improved solution of the present invention: The obtaining of the real-time traffic change information on the road and the real-time position of the vehicle specifically includes:

[0015] Obtain the satellite photo of the road and the real-time position of the vehicle feedback by the vehicle positioning system;

[0016] According to the satellite photo of the road, identify the occupied road area and the unoccupied road area covered by vehicles in each section of the road; the occupied road area includes the area occupied by the vehicle when driving on the road and the area occupied by the vehicle when parked on both sides of the road; among them, the occupied road area and the unoccupied road area change in real time as the vehicle enters and exits.

[0017] As another improved solution of the present invention: The analyzing of the travel times of multiple navigation routes based on real-time traffic change information specifically includes:

[0018] Respectively count the total current occupied road area, the total unoccupied road area and the number of traffic lights on all roads passed by each navigation route;

[0019] According to the total occupied road area and the total unoccupied road area, obtain the road utilization rate of each navigation route;

[0020] Judge whether the road utilization rate is greater than the normal utilization rate;

[0021] When the road utilization rate is not greater than the normal utilization rate, calculate the vehicle travel time according to the navigation route length and the average driving speed;

[0022] When the road usage rate is greater than the normal usage rate, subtract the normal usage rate from the road usage rate to obtain the congestion rate, and convert the congestion rate into an extended duration according to the linear relationship between the congestion rate and the extended duration;

[0023] Obtain the waiting duration according to the number of traffic lights and the average obstruction duration of each traffic light;

[0024] Add the vehicle driving duration, extended duration, and waiting duration corresponding to each navigation route to obtain the time duration required for the vehicle to reach the destination from its current position.

[0025] As a further solution of the present invention: With the movement of the vehicle and the changing information of the traffic conditions, when the vehicle is driving on the navigation route, planning multiple updated navigation routes from the current position of the vehicle to the destination, and analyzing the time durations of the multiple updated navigation routes and the currently selected navigation route specifically includes:

[0026] With the movement of the vehicle and the changing information of the traffic conditions, continuously obtain the updated real-time position of the vehicle and the updated road satellite photos;

[0027] Plan multiple updated navigation routes according to the updated real-time position of the vehicle and the updated road satellite photos;

[0028] Recalculate the time duration required for the remaining sections on the navigation route and the time duration required for the updated navigation routes.

[0029] As an optimized solution of the present invention: When the time duration of one of the multiple updated navigation routes is less than the time duration of the currently selected navigation route, sending a reminder message to update the navigation route to the in-vehicle terminal, and automatically replacing the currently selected navigation route with the updated navigation route with the shortest time duration specifically includes:

[0030] When the time duration of one of the multiple updated navigation routes is less than the time duration of the currently selected navigation route, sending a reminder message to update the navigation route to the in-vehicle terminal;

[0031] Start timing the sending duration from when the reminder message is sent;

[0032] Receive the operation instruction feedback from the operation terminal and drive according to the navigation route selected by the operation instruction; the operation instruction is to maintain the current navigation route or replace it with an updated navigation route;

[0033] When the sending duration is greater than the preset duration, automatically replace the currently selected navigation route with the updated navigation route with the shortest time duration.

[0034] As another solution of the present invention: When the road usage rate is greater than the normal usage rate, the method further includes:

[0035] Mark the roads with a road usage rate greater than the normal usage rate as congested roads, and mark the roads with a road usage rate not greater than the normal usage rate as unobstructed roads;

[0036] Through the analysis of road satellite photos, locate the unobstructed roads associated with the congested roads;

[0037] Shorten the red light waiting time of the congested roads to the dredging time, and extend the red light waiting time of the unobstructed roads to the regulation time.

[0038] On the other hand, a road traffic control system includes:

[0039] An information acquisition module for acquiring real-time traffic change information on the road and the real-time position of vehicles;

[0040] A route planning module for planning multiple navigation routes according to the position of the vehicle;

[0041] A duration analysis module for analyzing the travel durations of multiple navigation routes according to the real-time traffic change information and sending the analysis results to the in-vehicle terminal;

[0042] An information update module for acquiring the navigation route selected by the in-vehicle terminal and updating the real-time position of the vehicle on this navigation route;

[0043] A route update module for planning multiple updated navigation routes from the current position of the vehicle to the destination when the vehicle is traveling on the navigation route and analyzing the travel durations of the multiple updated navigation routes and the currently selected navigation route along with the movement of the vehicle and the change information of the traffic conditions;

[0044] A duration comparison module for determining whether the travel durations of the multiple updated navigation routes are less than the travel duration of the currently selected navigation route;

[0045] A route replacement module for sending a reminder message to update the navigation route to the in-vehicle terminal and automatically replacing the currently selected navigation route with the updated navigation route with the shortest travel time when the travel duration of one of the multiple updated navigation routes is less than the travel duration of the currently selected navigation route.

[0046] Advantages of the present invention: By obtaining real-time traffic change information on the road and the real-time position of the vehicle, and obtaining the selected navigation route on the in-vehicle terminal, and updating the real-time position of the vehicle on this navigation route; along with the movement of the vehicle and the change information of the traffic conditions, when the vehicle is traveling on the navigation route, plan multiple updated navigation routes from the current position of the vehicle to the destination, and analyze the travel times of the multiple updated navigation routes and the currently selected navigation route; when the travel time of one of the multiple updated navigation routes is less than the travel time of the currently selected navigation route, send a reminder message to update the navigation route to the in-vehicle terminal, and automatically replace the currently selected navigation route with the updated navigation route with the shortest travel time, so that the navigation route can be changed according to the current road conditions, enabling the vehicle to avoid congested sections and reach the destination at the fastest speed. By re-planning the navigation route, the vehicles can also be diverted to different sections, thereby achieving dynamic allocation of traffic jam sections and normal sections, improving the effective utilization rate of urban roads, and making the urban traffic system in a good operating state. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 is the main flowchart of a road traffic control method;

[0048] Figure 2 is the flowchart for updating the navigation route in a road traffic control method;

[0049] Figure 3 is the flowchart for replacing the navigation route in a road traffic control method;

[0050] Figure 4 is the flowchart for regulating traffic lights in a road traffic control method;

[0051] Figure 5 is the schematic diagram of the internal structure of a road traffic control system. DETAILED DESCRIPTION OF THE INVENTION

[0052] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0053] The present invention obtains real-time traffic change information on the road and the real-time position of the vehicle, obtains the navigation route selected by the in-vehicle terminal, and updates the real-time position of the vehicle on this navigation route; as the vehicle moves forward and the traffic condition change information occurs, when the vehicle is driving on the navigation route, it plans multiple updated navigation routes from the current position of the vehicle to the destination, and analyzes the travel times of the multiple updated navigation routes and the currently selected navigation route; when the travel time of one of the multiple updated navigation routes is less than the travel time of the currently selected navigation route, it sends a reminder message to update the navigation route to the in-vehicle terminal, and automatically replaces the currently selected navigation route with the updated navigation route with the shortest travel time, so that the navigation route can be changed according to the current road conditions, enabling the vehicle to avoid congested sections and reach the destination at the fastest speed. By re-planning the navigation route, the vehicle can also be diverted to different sections, thereby achieving dynamic allocation of congested and normal sections of the road, improving the effective utilization rate of urban roads, and making the urban traffic system operate in a healthy state.

[0054] Figure 1 The main flowchart of a road traffic control method according to an embodiment of the present invention is shown. The road traffic control method includes:

[0055] Obtain real-time traffic change information on the road and the real-time position of the vehicle.

[0056] Plan multiple navigation routes according to the position of the vehicle.

[0057] Analyze the travel times of multiple navigation routes according to the real-time traffic change information, and send the analysis results to the in-vehicle terminal.

[0058] Obtain the navigation route selected by the in-vehicle terminal, and update the real-time position of the vehicle on this navigation route. The above steps are executed at the vehicle starting stage to plan the most reasonable current navigation route for the vehicle and guide the vehicle to start smoothly.

[0059] As the vehicle moves forward and the traffic condition change information occurs, when the vehicle is driving on the navigation route, it plans multiple updated navigation routes from the current position of the vehicle to the destination, and analyzes the travel times of the multiple updated navigation routes and the currently selected navigation route. Because during the driving process of the vehicle, as time goes by, the road conditions on different roads change in real time. Some sections may not be congested when the route is initially planned, but after a period of time, some sections on the navigation route may become congested. Then, if continuing to drive on the initially planned navigation route, the travel time to reach the destination will increase. It may be relatively shorter to change to a different section.

[0060] Determine whether the time taken for multiple updated navigation routes is less than the time taken for the currently selected navigation route, and find the routes on the updated navigation routes that take less time than the initially selected navigation route. Of course, all the above real-time update steps are carried out inside the system background and are not displayed on the operation terminal.

[0061] When the time taken for one of the multiple updated navigation routes is less than the time taken for the currently selected navigation route, send a reminder message to update the navigation route to the in-vehicle terminal, and automatically replace the currently selected navigation route with the updated navigation route with the shortest time. Of course, there may be more than one navigation route among the multiple updated navigation routes whose time taken is less than the time taken for the currently selected navigation route. At this time, the route with the shortest time is preferably recommended. Of course, if the user also wants to pass through other locations on the way to the destination, the user can independently select other recommended updated navigation routes on the operation terminal.

[0062] In one case of this embodiment, the obtaining of the real-time traffic change information on the road and the real-time position of the vehicle specifically includes:

[0063] Obtain the satellite photo of the road and the real-time position of the vehicle feedback by the vehicle positioning system.

[0064] According to the satellite photo of the road, identify the occupied road area and the unoccupied road area covered by vehicles in each section of the road. The occupied road area includes the area occupied by the vehicle driving on the road and the area occupied by the vehicle parked on both sides of the road. Among them, the occupied road area and the unoccupied road area change in real time as the vehicle enters and exits. This method estimates whether the road is congested by the vehicle density on the road surface. Of course, this method is used for normal driving sections. For sections where accidents occur, other methods can be used for estimation.

[0065] In one case of this embodiment, the analyzing of the time taken for multiple navigation routes according to the real-time traffic change information specifically includes:

[0066] Respectively count the total current occupied road area, the total unoccupied road area, and the number of traffic lights on all roads passed by each navigation route.

[0067] According to the total occupied road area and the total unoccupied road area, obtain the road utilization rate of each navigation route.

[0068] Determine whether the road utilization rate is greater than the normal utilization rate. Suppose the normal utilization rate of the road is 40%. When the road utilization rate is less than 40%, the vehicles will not be congested, and when the vehicle passes through a traffic light, it only needs to wait at most once to pass; however, if the road utilization rate is not less than 40%, the vehicles will be congested on the road and cannot pass through the traffic light in a short time, and need to wait more than twice at the traffic light to be able to pass.

[0069] When the road utilization rate is not greater than the normal utilization rate, calculate the vehicle driving duration according to the length of the navigation route and the average driving speed.

[0070] When the road utilization rate is greater than the normal utilization rate, subtract the normal utilization rate from the road utilization rate to obtain the congestion rate, and convert the congestion rate into an extended duration according to the linear relationship between the congestion rate and the extended duration. Because the greater the congestion rate, the longer the waiting time at the traffic light, the lower the driving speed on the road, and there is a linear relationship between the congestion rate and the extended duration.

[0071] Obtain the waiting duration according to the number of traffic lights and the average blocking duration of each traffic light.

[0072] Add up the vehicle driving duration, extended duration, and waiting duration corresponding to each navigation route to obtain the total time required for the vehicle to reach the destination from its current position.

[0073] Figure 2 The flowchart of updating the navigation route in a road traffic control method according to an embodiment of the present invention is shown. As the vehicle moves forward and the traffic condition changes, when the vehicle is driving on the navigation route, plan multiple updated navigation routes from the current vehicle position to the destination, and analyze the time required for the multiple updated navigation routes and the currently selected navigation route, which specifically includes:

[0074] As the vehicle moves forward and the traffic condition changes, continuously obtain the updated real-time position of the vehicle and the updated road satellite photo.

[0075] According to the updated real-time position of the vehicle and the updated road satellite photo, plan multiple updated navigation routes. The updated navigation routes are the shortest several routes radiating from the current vehicle position to the destination.

[0076] Recalculate the time required for the remaining sections on the navigation route and the time required for the updated navigation route.

[0077] Figure 3The figure shows a flowchart for replacing a navigation route in a road traffic control method according to an embodiment of the present invention. When the travel time of one of multiple updated navigation routes is less than the travel time of the currently selected navigation route, a reminder message for updating the navigation route is sent to the in-vehicle terminal, and the currently selected navigation route is automatically replaced with the updated navigation route having the shortest travel time, which specifically includes:

[0078] When the travel time of one of multiple updated navigation routes is less than the travel time of the currently selected navigation route, a reminder message for updating the navigation route is sent to the in-vehicle terminal.

[0079] When the reminder message is sent, the sending duration is timed.

[0080] An operation instruction feedback from the operation terminal is received, and the vehicle travels according to the navigation route selected by the operation instruction. The operation instruction is to maintain the current navigation route or replace it with an updated navigation route.

[0081] When the sending duration is greater than a preset duration, the currently selected navigation route is automatically replaced with the updated navigation route having the shortest travel time. This can reduce the driver's operations and automatically switch the route when the driver is concentrating on driving.

[0082] Figure 4 The figure shows a flowchart for regulating traffic lights in a road traffic control method according to an embodiment of the present invention. When the road usage rate is greater than the normal usage rate, the method further includes:

[0083] The roads with a road usage rate greater than the normal usage rate are marked as congested roads, and the roads with a road usage rate not greater than the normal usage rate are marked as unobstructed roads.

[0084] Through the analysis of road satellite photos, the unobstructed roads associated with the congested roads are located.

[0085] The waiting time of traffic lights on the congested roads is shortened to the dredging duration, and the waiting time of traffic lights on the unobstructed roads is extended to the regulation duration, so as to flexibly regulate the use of urban roads. The changed traffic light durations are published in the cloud, so that the navigation system and the positioning system can obtain these adjusted duration data in a timely manner, recommend more reasonable routes for vehicles, and thus divert the vehicles to the un-congested roads to relieve the pressure on individual congested roads.

[0086] Figure 5 The figure shows an internal structure schematic diagram of a road traffic control system according to an embodiment of the present invention. The road traffic control system includes:

[0087] An information acquisition module 100, which is used to acquire the real-time traffic change information on the road and the real-time position of the vehicle.

[0088] The route planning module 200 is used to plan multiple navigation routes according to the position of the vehicle.

[0089] The duration analysis module 300 is used to analyze the travel durations of multiple navigation routes according to real-time traffic change information and send the analysis results to the in-vehicle terminal.

[0090] The information update module 400 is used to obtain the navigation route selected by the in-vehicle terminal and update the real-time position of the vehicle on this navigation route.

[0091] The route update module 500 is used to plan multiple updated navigation routes from the current position of the vehicle to the destination when the vehicle is traveling on the navigation route and analyze the travel durations of the multiple updated navigation routes and the currently selected navigation route along with the movement of the vehicle and the change information of the traffic conditions.

[0092] The duration comparison module 600 is used to determine whether the travel durations of the multiple updated navigation routes are less than the travel duration of the currently selected navigation route.

[0093] The route replacement module 700 is used to send a reminder message for updating the navigation route to the in-vehicle terminal and automatically replace the currently selected navigation route with the updated navigation route with the shortest travel time when the travel duration of one of the multiple updated navigation routes is less than the travel duration of the currently selected navigation route.

[0094] In order to enable the smooth operation of the above methods and systems, in addition to including the above various modules, the system may further include more or fewer components than those described above, or combine certain components, or different components. For example, it may include input / output devices, network access devices, buses, processors, and memories, etc.

[0095] It should be understood that although the steps in the flowcharts of the embodiments of the present invention are shown in sequence according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless there is a clear description in this article, the execution of these steps has no strict order limit, and these steps can be executed in other orders. Moreover, at least a part of the steps in each embodiment may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed alternately or in turn with at least a part of other steps or sub-steps or stages of other steps.

[0096] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0097] The above-described embodiments only express several preferred embodiments of the present invention. The description is relatively specific and detailed, but it cannot be understood as a limitation on the scope of the patent for the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be subject to the appended claims.

Claims

1. A road traffic control method, characterized in that: The method comprises: Obtain real-time traffic change information on the road and the real-time location of vehicles; Plan multiple navigation routes based on the vehicle's location; Analyze the duration of multiple navigation routes based on real-time traffic change information and send the analysis results to the vehicle terminal; Obtain the navigation route selected by the vehicle terminal and update the real-time position of the vehicle on the navigation route; As the vehicle moves and traffic conditions change, when the vehicle is traveling on the navigation route, multiple updated navigation routes are planned from the vehicle's current location to the destination, and the duration of the multiple updated navigation routes and the currently selected navigation route is analyzed; Determine whether the duration of the multiple updated navigation routes is less than the duration of the currently selected navigation route; When the time taken by one of the multiple updated navigation routes is shorter than the time taken by the currently selected navigation route, a reminder message for updating the navigation route is sent to the vehicle-mounted terminal, and the currently selected navigation route is automatically replaced with the updated navigation route with the shortest time taken; The analyzing the duration of multiple navigation routes according to the real-time traffic change information specifically includes: Count the total occupied road area, the total unoccupied road area and the number of traffic lights on all roads passed by each navigation route; According to the total occupied road area and the total unoccupied road area, the road utilization rate on each navigation route is obtained; Determine whether the road usage rate is greater than the normal usage rate; When the road usage rate is not greater than the normal usage rate, the vehicle driving time is calculated according to the navigation route length and the average driving speed; When the road usage rate is greater than the normal usage rate, the congestion rate is obtained by subtracting the normal usage rate from the road usage rate. According to the linear relationship between the congestion rate and the extension time, the congestion rate is converted into the extension time. According to the number of traffic lights and the average blocking time of each traffic light, the waiting time is obtained; The vehicle driving time, extension time and waiting time corresponding to each navigation route are added together to obtain the time required for the vehicle to reach the destination.

2. The road traffic control method according to claim 1, characterized in that: The obtaining of the real-time traffic change information on the road and the real-time position of the vehicle specifically includes: Obtain satellite photos of the road and the real-time location of the vehicle as fed back by the vehicle positioning system; Based on satellite photos of the road, the occupied road area covered by vehicles and the unoccupied road area in each road section are identified; the occupied road area includes the area occupied by vehicles driving on the road and the area occupied by vehicles parked on both sides of the road; the occupied road area and the unoccupied road area change in real time as vehicles enter and exit the road.

3. The road traffic control method according to claim 1, characterized in that: The method of planning multiple updated navigation routes from the current position of the vehicle to the destination as the vehicle moves along the navigation route and the changing information of the traffic conditions, and analyzing the duration of the multiple updated navigation routes and the currently selected navigation route specifically includes: As the vehicle moves and traffic conditions change, the real-time location of the vehicle and updated road satellite photos are continuously obtained; Plan multiple updated navigation routes based on updated vehicle real-time positions and updated road satellite photos; Recalculate the time required to complete the remaining sections of the navigation route and the time required to update the navigation route.

4. The road traffic control method according to claim 1, characterized in that: When the duration of one of the multiple updated navigation routes is shorter than the duration of the currently selected navigation route, a reminder message for updating the navigation route is sent to the vehicle-mounted terminal, and the currently selected navigation route is automatically replaced with the updated navigation route with the shortest duration, specifically including: When the time taken by one of the multiple updated navigation routes is less than the time taken by the currently selected navigation route, a reminder message for updating the navigation route is sent to the vehicle terminal; The duration of the reminder message will be counted starting from the time it is sent. Receive an operation instruction fed back by the operation terminal, and drive according to the navigation route selected by the operation instruction; the operation instruction is to maintain the current navigation route or to replace and update the navigation route; When the sending time is longer than the preset time, the currently selected navigation route will be automatically replaced with the updated navigation route with the shortest time.

5. The road traffic control method according to claim 3, characterized in that: When the road usage rate is greater than the normal usage rate, the method further includes: Roads with a marked road usage rate greater than the normal usage rate are congested roads, and roads with a marked road usage rate not greater than the normal usage rate are unobstructed roads; Locate unobstructed roads associated with congested roads through analysis of road satellite photos; Shorten the waiting time for traffic lights on congested roads to the clearing time, and extend the waiting time for traffic lights on unobstructed roads to the regulation time.

6. A system for implementing the road traffic control method as claimed in claim 1, characterized in that: The system comprises: An information acquisition module is used to obtain real-time traffic change information on the road and the real-time location of the vehicle; Route planning module, used to plan multiple navigation routes according to the vehicle's location; Duration analysis module, used to analyze the duration of multiple navigation routes based on real-time traffic change information, and send the analysis results to the vehicle terminal; The information update module is used to obtain the navigation route selected by the vehicle-mounted terminal and update the real-time position of the vehicle on the navigation route; The route update module is used to plan multiple updated navigation routes from the current position of the vehicle to the destination as the vehicle moves along the navigation route and the traffic conditions change, and analyze the time taken by the multiple updated navigation routes and the currently selected navigation route; The duration comparison module is used to determine whether the duration of multiple updated navigation routes is less than the duration of the currently selected navigation route; The route replacement module is used to send a reminder message to the vehicle-mounted terminal to update the navigation route when the time required for one of the multiple updated navigation routes is less than the time required for the currently selected navigation route, and automatically replace the currently selected navigation route with the updated navigation route with the shortest time.

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