Road traffic control method and system

Abstract

A road traffic control method and system. The method comprises: acquiring real-time traffic change information on a road and the real-time position of a vehicle, and acquiring a navigation route selected by a vehicle-mounted terminal; on the basis of the traveling of the vehicle and change information of traffic conditions, planning multiple updated navigation routes from the current position of the vehicle to a destination, and analyzing durations of the multiple updated navigation routes and the currently selected navigation route; and recommending, to the vehicle-mounted terminal in a timely manner, an updated navigation route having the shortest duration. Navigation routes can be changed along with changes of current traffic conditions, so that vehicles can avoid congested road sections and reach destinations as quickly as possible; by planning new navigation routes, vehicles can also be diverted to different road sections, thereby achieving dynamic allocation for congested road sections and uncongested road sections, improving the effective utilization rates of urban roads, and enabling urban traffic systems to be in a benign operation state.

Description

Road traffic control method and system TECHNICAL FIELD

[0001] The present application belongs to the field of computer, in particular relates to a road traffic control method and system. BACKGROUND

[0002] Road traffic control refers to the relevant traffic management departments according to technical specifications, around the basic goal of road traffic order, safety and smooth, using modern management theory and advanced science and technology, take a variety of methods, planning, organization, command, coordination, control, etc. Traffic control, also known as traffic signal control or urban traffic control, is to rely on artificial command or use traffic signal control facilities, with traffic characteristics to command vehicles and pedestrians.

[0003] In the existing road traffic control signal system, and in the existing auxiliary road traffic control system, such as intersection traffic lights and red light camera system, camera monitoring system, electronic board information announcement, street lamps, radio announcement, etc., are used for the control of traffic at plane intersection or local range, and are set in specific location; In the application of various vehicle positioning systems to highway traffic, a navigation instrument is usually set on the vehicle to provide the vehicle with driving start and end line guidance; The above existing technologies cannot realize the display of the occupation situation of linear road carriageway and the vehicle driving state and vehicle distance in a long distance, continuously and dynamically.

[0004] The traffic lights and navigation methods of the prior art are fixed, and the navigation cannot change the selected navigation route according to the road traffic change, which leads to the fact that some road sections are very congested and some road sections are very smooth in some time period, resulting in poor traffic efficiency, low effective utilization rate of urban roads, and the existing signal lights do not have the ability to intelligently adjust and dredge traffic according to the change of road traffic flow. SUMMARY

[0005] The embodiment of the present application provides a road traffic control method and system, which aims to solve the problem that the traffic lights and navigation methods of the prior art are fixed, and the navigation cannot change the navigation route according to the road traffic change, resulting in poor traffic efficiency and low effective utilization rate of urban roads.

[0006] The embodiment of the present application is realized in this way, on the one hand, a road traffic control method comprises:

[0007] Obtaining traffic real-time change information on the road and real-time position of the vehicle;

[0008] Planning a plurality of navigation routes according to the position of the vehicle;

[0009] According to the traffic real-time change information, the time length of the multiple navigation routes is analyzed, and the analysis result is sent to the vehicle-mounted terminal;

[0010] The navigation route selected by the vehicle-mounted terminal is acquired, and the real-time position of the vehicle is updated on the navigation route;

[0011] With the change of the traffic condition and the travel of the vehicle, when the vehicle travels on the navigation route, multiple updated navigation routes from the current position of the vehicle to the destination are planned, and the time length of the multiple updated navigation routes and the currently selected navigation route is analyzed;

[0012] It is judged whether the time length of the multiple updated navigation routes is less than the time length of the currently selected navigation route;

[0013] When the time length of one of the multiple updated navigation routes is less than the time length of the currently selected navigation route, the reminding information of the updated navigation route is sent to the vehicle-mounted terminal, and the currently selected navigation route is automatically replaced by the updated navigation route with the shortest time length.

[0014] As an improved scheme of the present application, the acquisition of the traffic real-time change information on the road and the real-time position of the vehicle specifically comprises:

[0015] The satellite photo of the road and the real-time position of the vehicle fed back by the vehicle positioning system are acquired;

[0016] According to the satellite photo of the road, the occupied road area and the unoccupied road area covered by the vehicle in each road section are identified; the occupied road area comprises the area of the road occupied by the vehicle traveling on the road and the area of the road occupied by the vehicle pausing on both sides of the road; wherein the occupied road area and the unoccupied road area are real-time changed with the travel of the vehicle.

[0017] As another improved scheme of the present application, the analysis of the time length of the multiple navigation routes according to the traffic real-time change information specifically comprises:

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

[0019] According to the total occupied road area and the total unoccupied road area, the road usage rate on each navigation route is obtained;

[0020] It is judged whether the road usage rate is greater than the normal usage rate;

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

[0022] When the road usage rate is greater than the normal usage rate, a congestion rate is obtained by subtracting the normal usage rate from the road usage rate, and the congestion rate is converted into the extended time length according to a linear relationship between the congestion rate and the extended time length;

[0023] According to the number of traffic lights and the average blocking time length of each traffic light, the waiting time length is obtained.

[0024] The vehicle travel time length, the extended time length and the waiting time length corresponding to each navigation route are added to obtain the use time length required for the vehicle at the position to reach the destination.

[0025] As a further scheme of the present application: the information of the change of the vehicle travel and the traffic condition, when the vehicle travels on the navigation route, a plurality of updated navigation routes from the current position of the vehicle to the destination are planned, and the use time length of the plurality of updated navigation routes and the currently selected navigation route is analyzed, which specifically comprises:

[0026] The information of the change of the vehicle travel and the traffic condition, the updated real-time position of the vehicle and the updated road satellite photo are constantly obtained;

[0027] According to the updated real-time position of the vehicle and the updated road satellite photo, a plurality of updated navigation routes are planned;

[0028] The use time length required for the remaining road section on the navigation route and the use time length required for the updated navigation route are recalculated.

[0029] As an optimization scheme of the present application: when the use time length of one of the plurality of updated navigation routes is less than the use time length of the currently selected navigation route, the reminding information of the updated navigation route is sent to the vehicle-mounted terminal, and the currently selected navigation route is automatically replaced by the updated navigation route with the shortest use time length, which specifically comprises:

[0030] When the use time length of one of the plurality of updated navigation routes is less than the use time length of the currently selected navigation route, the reminding information of the updated navigation route is sent to the vehicle-mounted terminal;

[0031] From the time when the reminding information is sent, the sending time length is counted;

[0032] The operation instruction fed back by the operation terminal is received, and the navigation route selected according to the operation instruction is traveled; the operation instruction is to maintain the current navigation route or replace the updated navigation route;

[0033] When the sending time length is greater than the preset time length, the currently selected navigation route is automatically replaced by the updated navigation route with the shortest use time length.

[0034] As another scheme of the present application: when the road usage rate is greater than the normal usage rate, the method further comprises:

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

[0036] Position the smooth road associated with the congested road through analysis of road satellite photos;

[0037] Shorten the red light waiting time of the congested road to a dredging time, and extend the red light waiting time of the smooth road to a regulation time.

[0038] In another aspect, a road traffic control system includes:

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

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

[0041] A time length analysis module for analyzing time length of the plurality of navigation routes according to the real-time traffic variation information, and sending the analysis result to the vehicle-mounted terminal;

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

[0043] A route updating module for planning a plurality of updated navigation routes from the current position of the vehicle to the destination, and analyzing time length of the plurality of updated navigation routes and the currently selected navigation route, as the vehicle travels and the traffic condition changes;

[0044] A time length comparison module for judging whether the time length of the plurality of updated navigation routes is less than the time length of the currently selected navigation route;

[0045] A route replacement module for sending a reminder information of the updated navigation route to the vehicle-mounted terminal, and automatically replacing the currently selected navigation route with the updated navigation route with the shortest time length, when the time length of one of the plurality of updated navigation routes is less than the time length of the currently selected navigation route.

[0046] The beneficial effects of the present application are: by acquiring real-time traffic change information on the road and real-time position of the vehicle, and acquiring the navigation route selected by the vehicle terminal, and updating the real-time position of the vehicle on the navigation route; with the change of the traffic condition and the travel of the vehicle, when the vehicle is driving on the navigation route, multiple updated navigation routes from the current position of the vehicle to the destination are planned, and the time length of the multiple updated navigation routes and the current selected navigation route is analyzed; when the time length of one of the multiple updated navigation routes is less than the time length of the current selected navigation route, the vehicle terminal is prompted with the update navigation route reminder information, and the current selected navigation route is automatically replaced with the updated navigation route with the shortest time, so that the navigation route can be changed with the change of the current road condition, and the vehicle can avoid the congested road section to reach the destination at the fastest speed, and through the re-planning of the navigation route, the vehicle can also be distributed to different road sections, so as to achieve the dynamic allocation of the traffic jam road section and the general road section, improve the effective utilization rate of the urban road, and make the urban traffic system in a benign operation state. BRIEF DESCRIPTION OF DRAWINGS

[0047] Fig. 1 is a main flowchart of a road traffic control method;

[0048] Fig. 2 is an updated navigation route flowchart in a road traffic control method;

[0049] Fig. 3 is a navigation route replacement flowchart in a road traffic control method;

[0050] Fig. 4 is a traffic light control flowchart in a road traffic control method;

[0051] Fig. 5 is a schematic diagram of the internal structure of a road traffic control system. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0053] The application obtains real-time traffic change information on the road and real-time position of the vehicle, and obtains a navigation route selected by the vehicle-mounted terminal, and updates the real-time position of the vehicle on the navigation route; with the change information of the traffic condition and the travel of the vehicle, when the vehicle travels on the navigation route, multiple updated navigation routes from the current position of the vehicle to the destination are planned, and the time length of the multiple updated navigation routes and the current selected navigation route is analyzed; when the time length of one of the multiple updated navigation routes is less than the time length of the current selected navigation route, the vehicle-mounted terminal is prompted to update the navigation route, and the current selected navigation route is automatically replaced by the updated navigation route with the shortest time, so that the navigation route can be changed with the change of the current road condition, the vehicle can avoid the congested road section, and reaches the destination at the fastest speed, and through the re-planning of the navigation route, the vehicle can also be distributed to different road sections, so as to achieve the dynamic allocation of the traffic jam road section and the general road section, improve the effective utilization rate of the urban road, and make the urban traffic system in a benign operation state.

[0054] Fig. 1 shows a main flowchart of a road traffic control method according to an embodiment of the application, the road traffic control method comprising:

[0055] Step S10: obtaining real-time traffic change information on the road and real-time position of the vehicle.

[0056] Step S11: planning multiple navigation routes according to the position of the vehicle.

[0057] Step S12: analyzing the time length of the multiple navigation routes according to the real-time traffic change information, and sending the analysis result to the vehicle-mounted terminal.

[0058] Step S13: obtaining a navigation route selected by the vehicle-mounted terminal, and updating the real-time position of the vehicle on the navigation route. The above step is performed in the starting stage of the vehicle, and plans the current most reasonable navigation route for the vehicle to guide the vehicle to start smoothly.

[0059] Step S14: with the change information of the traffic condition and the travel of the vehicle, when the vehicle travels on the navigation route, multiple updated navigation routes from the current position of the vehicle to the destination are planned, and the time length of the multiple updated navigation routes and the current selected navigation route is analyzed. Because in the process of the travel of the vehicle, with the passage of time, the road condition on different roads changes in real time, some road sections may not be congested when the navigation route is initially planned, but after a period of time, some road sections on the navigation route may be congested, so that the time length to reach the destination is increased when the vehicle continues to travel on the initially planned navigation route, and the time is relatively short when the road sections are changed.

[0060] Step S15: judging whether the time length of the plurality of updated navigation routes is less than the time length of the currently selected navigation route, finding the route with shorter time length than the initially selected navigation route among the updated navigation routes, of course, the above-mentioned real-time updating steps are performed in the background of the system and are not displayed on the operation end.

[0061] Step S16: when the time length of one of the plurality of updated navigation routes is less than the time length of the currently selected navigation route, sending a reminder information of the updated navigation route to the vehicle-mounted end, and automatically replacing the currently selected navigation route with the updated navigation route with the shortest time length. Of course, there can be more than one navigation route with a time length less than the time length of the currently selected navigation route among the plurality of updated navigation routes, at this time, the route with the shortest time length is preferentially recommended, of course, if the user still wants to pass through other places on the way to the destination, the user can select other recommended updated navigation routes on the operation end.

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

[0063] Step S100: obtaining satellite photos of the road and real-time position of the vehicle fed back by the vehicle positioning system.

[0064] Step S101: according to the satellite photos of the road, identifying the occupied road area and the unoccupied road area covered by the vehicle in each road section. The occupied road area includes the area of the road occupied by the vehicle driving on the road and the area of the road occupied by the vehicle stopping on both sides of the road. The occupied road area and the unoccupied road area are real-time variable with the entry and exit of the vehicle. This method estimates whether the road is in a congested state through the vehicle density on the road surface, of course, this method is used for normal driving road sections, and other methods can be used for accident road sections.

[0065] In one case of the embodiment, the analyzing of the time length of the plurality of navigation routes according to the real-time traffic variation information specifically comprises:

[0066] Step S120: respectively counting the current total occupied road area, the total unoccupied road area and the number of traffic lights on all roads passed by each navigation route.

[0067] Step S121: obtaining the road usage rate of each navigation route according to the total occupied road area and the total unoccupied road area.

[0068] Step S122: judging whether the road usage rate is greater than the normal usage rate. Assuming that the normal usage rate of the road is 40%, when the road usage rate is less than 40%, the vehicle will not be in a congested state, and the vehicle only needs to wait at most once to pass through a red light; but if the road usage rate is not less than 40%, the vehicle will be congested on the road, and cannot pass through the red light in a short time, and needs to wait more than twice at the red light to pass through.

[0069] Step S123: when the road usage rate is not greater than the normal usage rate, the vehicle driving time length is calculated according to the navigation route length and the average driving speed.

[0070] Step S124: 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, and the congestion rate is converted into the extended time length according to the linear relationship between the congestion rate and the extended time length. Because the greater the congestion rate, the longer the waiting time through the red light, and the speed on the road will decrease, and the congestion rate and the extended time length are in a linear relationship.

[0071] Step S125: the waiting time length is obtained according to the number of red lights and the average blocking time length of each red light.

[0072] Step S126: the vehicle driving time length, the extended time length and the waiting time length corresponding to each navigation route are added to obtain the use time length required for the vehicle position to reach the destination.

[0073] Fig. 2 shows an updating navigation route flowchart in a road traffic control method according to an embodiment of the present application. The updated navigation route is planned from the current vehicle position to the destination, and the use time length of the updated navigation route and the currently selected navigation route is analyzed, which specifically includes:

[0074] Step S140: with the information of the vehicle travel and the change of the traffic condition, the updated real-time vehicle position and the updated road satellite photo are constantly obtained.

[0075] Step S141: according to the updated real-time vehicle position and the updated road satellite photo, the updated navigation route is planned. The updated navigation route is the shortest route radiating from the current vehicle position to the destination.

[0076] Step S142: the use time length required for the remaining road section on the navigation route and the use time length required for the updated navigation route are recalculated.

[0077] Figure 3 shows a navigation route replacement flow chart in a road traffic control method according to an embodiment of the present application, when the time length of one of the plurality of updated navigation routes is less than the time length of the currently selected navigation route, the vehicle terminal is prompted to issue a reminder information of the updated navigation route, and the currently selected navigation route is automatically replaced by the updated navigation route with the shortest time length, which specifically comprises:

[0078] Step S160: When the time length of one of the plurality of updated navigation routes is less than the time length of the currently selected navigation route, the vehicle terminal is prompted to issue a reminder information of the updated navigation route.

[0079] Step S161: From the time when the reminder information is issued, the issuing time length is started to be counted.

[0080] Step S162: The operation instruction fed back by the operation terminal is received, and the navigation route selected according to the operation instruction is driven. The operation instruction is to maintain the current navigation route or replace the updated navigation route.

[0081] Step S163: When the issuing time length is greater than the preset time length, the currently selected navigation route is automatically replaced by the updated navigation route with the shortest time length. The operation of the driver can be reduced, and the route can be automatically switched when the driver concentrates on driving.

[0082] Figure 4 shows a red light control flow chart in a road traffic control method according to an embodiment of the present application, when the road usage rate is greater than the normal usage rate, the method further comprises:

[0083] Step S20: Marking the road with the road usage rate greater than the normal usage rate as a congested road, and marking the road with the road usage rate not greater than the normal usage rate as a smooth road.

[0084] Step S21: Positioning the smooth road associated with the congested road through analysis of the road satellite photo.

[0085] Step S22: Shortening the red light waiting time length of the congested road to the dredging time length, and lengthening the red light waiting time length of the smooth road to the control time length, flexibly controlling the usage of the urban road, and publishing the changed red light time length in the cloud, so that the navigation system and the positioning system can timely obtain the adjusted time length data, recommend a more reasonable route for the vehicle, and thereby guide the vehicle to the road without congestion, and reduce the pressure of the individual congested road.

[0086] Figure 5 shows a schematic diagram of the internal structure of a road traffic control system according to an embodiment of the present application, the road traffic control system comprises:

[0087] The information acquisition module 100 is configured 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 configured to plan a plurality of navigation routes according to the position of the vehicle.

[0089] The time length analysis module 300 is configured to analyze the time length of the plurality of navigation routes according to the real-time traffic variation information, and send the analysis result to the vehicle terminal.

[0090] The information updating module 400 is configured to obtain the selected navigation route of the vehicle terminal, and update the real-time position of the vehicle on the navigation route.

[0091] The route updating module 500 is configured to plan a plurality of updated navigation routes from the current position of the vehicle to the destination, and analyze the time length of the plurality of updated navigation routes and the selected navigation route, when the vehicle travels on the navigation route, according to the variation information of the traffic condition and the travel of the vehicle.

[0092] The time length comparison module 600 is configured to determine whether the time length of the plurality of updated navigation routes is less than the time length of the selected navigation route.

[0093] The route replacing module 700 is configured to send the reminding information of the updated navigation route to the vehicle terminal, and automatically replace the selected navigation route with the updated navigation route with the shortest time length, when the time length of one of the plurality of updated navigation routes is less than the time length of the selected navigation route.

[0094] In order to enable the above-mentioned method and system to run smoothly, the system can include more or less components than those described above, or combine some components, or different components, for example, can include input and output devices, network access devices, buses, processors and memories, etc.

[0095] It should be understood that, although each step in the flowchart of each embodiment of the present application is displayed in sequence according to the arrow, these steps are not necessarily executed in the order indicated by the arrow. Unless otherwise specified herein, the execution of these steps is not strictly limited in sequence, and these steps can be executed in other orders. Moreover, at least part of the steps in each embodiment can include multiple sub-steps or multiple stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution order of these sub-steps or stages is not necessarily sequential, but can be executed alternately or alternately with at least part of other steps or sub-steps or stages of other steps.

[0096] Any combination of the technical features in the above-described embodiments can be made, and for the sake of brevity, not all possible combinations are described, however, as long as there is no conflict, any combination of the technical features should be considered within the scope of the present disclosure.

[0097] The above-described embodiments only express several preferred embodiments of the present application, which are described in a more specific and detailed manner, but should not be understood as a limitation to the scope of the patent of the present application. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, which are all within the scope of protection of the present application. Therefore, the scope of protection of the patent of the present application should be subject to the appended claims.

Claims

1. A method for managing road traffic, characterized by, The method comprises: acquiring real-time traffic variation information on roads and real-time position of a vehicle; planning a plurality of navigation routes according to the position of the vehicle; analyzing time length of the plurality of navigation routes according to the real-time traffic variation information, and sending the analysis result to a vehicle-mounted terminal; acquiring a navigation route selected by the vehicle-mounted terminal, and updating the real-time position of the vehicle on the navigation route; planning a plurality of updated navigation routes from the current position of the vehicle to a destination while the vehicle is driving on the navigation route, and analyzing time length of the plurality of updated navigation routes and the currently selected navigation route, along with the driving of the vehicle and the variation information of traffic conditions; judging whether the time length of the plurality of updated navigation routes is less than the time length of the currently selected navigation route; when the time length of one of the plurality of updated navigation routes is less than the time length of the currently selected navigation route, sending a reminder information of the updated navigation route to the vehicle-mounted terminal, and automatically replacing the currently selected navigation route with the updated navigation route with the shortest time length.

2. The road traffic management method according to claim 1, wherein The acquiring of the real-time traffic variation information on roads and the real-time position of the vehicle specifically comprises: acquiring satellite photos of roads and real-time position of the vehicle fed back by a vehicle positioning system; identifying, according to the satellite photos of the roads, occupied road area and unoccupied road area covered by the vehicle in each road section; the occupied road area comprises area occupied by the vehicle driving on the road and area occupied by the vehicle pausing on both sides of the road; wherein the occupied road area and the unoccupied road area are real-time variable along with the driving in and out of the vehicle.

3. The road traffic management method according to claim 1, wherein The analyzing of the time length of the plurality of navigation routes according to the real-time traffic variation information specifically comprises: respectively counting current total occupied road area, total unoccupied road area and number of traffic lights on all roads passed by each navigation route; obtaining road usage rate on each navigation route according to the total occupied road area and the total unoccupied road area; judging whether the road usage rate is greater than normal usage rate; when the road usage rate is not greater than the normal usage rate, calculating vehicle driving time length according to length of the navigation route and average driving speed; when the road usage rate is greater than the normal usage rate, obtaining congestion rate by subtracting the normal usage rate from the road usage rate, and converting the congestion rate into extended time length according to linear relationship between the congestion rate and the extended time length; obtaining waiting time length according to the number of traffic lights and average blocking time length of each traffic light; adding vehicle driving time length, extended time length and waiting time length corresponding to each navigation route to obtain time length required for the vehicle to reach the destination from the current position.

4. The road traffic management method according to claim 1, wherein, The planning of the plurality of updated navigation routes from the current position of the vehicle to the destination while the vehicle is driving on the navigation route, along with the driving of the vehicle and the variation information of traffic conditions, and the analyzing of time length of the plurality of updated navigation routes and the currently selected navigation route specifically comprise: continuously acquiring updated real-time position of the vehicle and updated satellite photos of the roads along with the driving of the vehicle and the variation information of traffic conditions; planning a plurality of updated navigation routes according to the updated real-time position of the vehicle and the updated satellite photos of the roads; Re-calculate the time length required for the remaining section of the navigation route and the time length required for updating the navigation route.

5. The road traffic management method according to Claim 1, wherein When the time length of one of the plurality of updated navigation routes is less than the time length of the currently selected navigation route, the system sends a reminder message to the vehicle terminal to update the navigation route and automatically replaces the currently selected navigation route with the updated navigation route with the shortest time length. When the time length of one of the plurality of updated navigation routes is less than the time length of the currently selected navigation route, the system sends a reminder message to the vehicle terminal to update the navigation route. The time length is counted from the time the reminder message is sent. The system receives an operation instruction from the operation terminal and travels according to the selected navigation route according to the operation instruction. The operation instruction is to maintain the current navigation route or replace the updated navigation route. When the time length is greater than the preset time length, the system automatically replaces the currently selected navigation route with the updated navigation route with the shortest time length.

6. The road traffic management method according to claim 3, wherein, When the road usage rate is greater than the normal usage rate, the method further comprises: Marking the road with a usage rate greater than the normal usage rate as a congested road and marking the road with a usage rate not greater than the normal usage rate as a smooth road; Positioning the smooth road associated with the congested road through analysis of the road satellite photo; Shortening the red light waiting time of the congested road to the dredging time and lengthening the red light waiting time of the smooth road to the control time.

7. A road traffic management system, characterized by, The system comprises: An information acquisition module for acquiring real-time traffic variation information on the road and real-time position of the vehicle; A route planning module for planning a plurality of navigation routes according to the position of the vehicle; A time length analysis module for analyzing the time length of the plurality of navigation routes according to the real-time traffic variation information and sending the analysis result to the vehicle terminal; An information updating module for acquiring the selected navigation route of the vehicle terminal and updating the real-time position of the vehicle on the navigation route; A route updating module for planning a plurality of updated navigation routes from the current position of the vehicle to the destination as the vehicle travels and the traffic condition changes, and analyzing the time length of the plurality of updated navigation routes and the currently selected navigation route; A time length comparison module for determining whether the time length of the plurality of updated navigation routes is less than the time length of the currently selected navigation route; A route replacement module for sending a reminder message to the vehicle terminal to update the navigation route when the time length of one of the plurality of updated navigation routes is less than the time length of the currently selected navigation route, and automatically replacing the currently selected navigation route with the updated navigation route with the shortest time length.

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