CN112053570B - Urban traffic road network running state monitoring and evaluating method and system - Google Patents
Urban traffic road network running state monitoring and evaluating method and system Download PDFInfo
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- G08G1/052—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed
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- G08G1/00—Traffic control systems for road vehicles
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Abstract
The invention discloses a method and a system for monitoring and evaluating the running state of an urban traffic network, relates to the related field of traffic monitoring and evaluation, and aims to solve the problem that the running state of the urban traffic network is judged basically through the traffic flow, but the judgment of the traffic flow is not enough to predict and evaluate the subsequent traffic running state due to the influence of other factors caused by the judgment of the traffic flow. The vehicle positioning device is characterized in that a vehicle positioning module is installed on the vehicle, the output end of the vehicle positioning module is connected with the input end of a data acquisition module, the output end of the data acquisition module is connected with the input end of a vehicle positioning data judgment module, the input end of the data acquisition module is connected with the output end of a lane installation detector, the output end of the data acquisition module is connected with the input end of a traffic operation data adjustment module, and the input end of the traffic operation data adjustment module is connected with the output end of the vehicle positioning data judgment module.
Description
Technical Field
The invention relates to the related field of traffic monitoring and evaluation, in particular to a method and a system for monitoring and evaluating the running state of an urban traffic network.
Background
Urban traffic consists of private traffic, urban public traffic and professional transport of goods 3 parts. Private transportation includes hiking and travel with a self-propelled vehicle. The self-use vehicles include cars, motorcycles, bicycles and the like; urban public transport is passenger transport. The passenger transport tools comprise buses, trams, trolleybuses, underground railways, taxis and the like; the specialized transportation of goods is operated by a transportation enterprise with specialized transportation tools. The urban public transport system has characteristics due to the difference of the scale, the nature, the structure, the geographic position and the political economic status of the urban public transport system, but the urban public transport system is mainly used for passenger transport, and passenger transport peaks are formed in the morning and at the evening on-duty time. The criteria for evaluating the urban traffic conditions are the development level of urban public transport and professional transportation of goods, traffic order and traffic safety conditions, road construction conditions, traffic smoothness, traffic nuisance conditions, and average speed in busy urban areas.
The current monitoring of the traffic network running state is that the traffic flow of each intersection is calculated by an electronic velometer, a monitor and the like, the evaluation of the traffic running state is carried out according to the traffic flow, but for urban traffic, the traffic flow can not be completely evaluated, when the running speed of the intersection is higher, the traffic flow can be gradually reduced under the condition that the traffic flow is not increased even if the traffic flow is high, the traffic flow is smaller when the running speed of the intersection is low, and similarly, under the condition that the traffic flow is not increased, the traffic flow can be increased along with the continuous running, so the traffic flow is not enough to completely judge the running state of the urban traffic network; therefore, the market urgently needs to develop a method and a system for monitoring and evaluating the running state of the urban traffic network to help people to solve the existing problems.
Disclosure of Invention
The invention aims to provide a method and a system for monitoring and evaluating the running state of an urban traffic network, which aim to solve the problem that the running state of the urban traffic network is judged basically by the traffic flow, but the judgment of the traffic flow is not enough to predict and evaluate the subsequent traffic running state due to the influence of other factors caused by the judgment of the traffic flow.
In order to achieve the purpose, the invention provides the following technical scheme: an urban traffic network running state monitoring and evaluating system comprises a vehicle, wherein a vehicle positioning module is arranged on the vehicle, the output end of the vehicle positioning module is connected with the input end of a data acquisition module, the output end of the data acquisition module is connected with the input end of a vehicle positioning data judging module, the input end of the data acquisition module is connected with the output end of a lane installation detector, the output end of the data acquisition module is connected with the input end of a traffic running data adjusting module, the input end of the traffic running data adjusting module is connected with the output end of the vehicle positioning data judging module, the input end of the vehicle positioning data judging module is connected with the output end of an urban traffic network topological structure database, the output end of the traffic running data adjusting module is connected with the input end of a traffic running state calculating module, the output end of the traffic running state calculation module is connected with the input end of the traffic running state evaluation module, and the input end of the traffic running state evaluation module is connected with the output end of the urban traffic network topology structure database;
the vehicle is a main driving tool of an urban traffic network;
the vehicle positioning module is a positioning structure arranged on a vehicle and realizes real-time recording of a vehicle running track;
the lane installation detector is monitoring equipment installed on a lane and realizes the monitoring of the speed and the total traffic flow of each vehicle at an intersection and a road section;
the data acquisition module is used for acquiring and transmitting the acquired vehicle running track data, the vehicle running speed data and the vehicle flow data;
the urban traffic network topological structure database is used for realizing the integration of objective urban traffic network data and subjective vehicle driving data;
the vehicle positioning data judgment module receives the data collected by the data collection module and judges the received data;
the traffic operation data adjusting module receives the judgment information of the vehicle positioning data judging module and adjusts the data of the traffic operation data according to the judgment information;
the traffic operation state calculation module is used for receiving the traffic operation data sent by the traffic operation data adjustment module and performing data integration calculation;
the traffic running state evaluation module receives the calculation data of the traffic running state calculation module and evaluates the traffic running state of the road section or the called intersection;
the traffic running state calculation module calculates the maximum traffic flow borne by the road, and calculates the vehicle speed corresponding to the maximum traffic flow;
the traffic running state evaluation module compares the running speed of the vehicle with the speed corresponding to the maximum traffic flow, and when the running speed of the vehicle is greater than the speed corresponding to the maximum traffic flow, the vehicle is in a passing state under the condition that the traffic flow is not continuously increased or reduced; the running speed of the vehicle is gradually reduced along with the increase of the traffic flow;
the vehicle is in a crowded state under the condition that the vehicle speed corresponding to the vehicle running speed and the maximum vehicle flow is basically kept at ordinary times, which means that the vehicle flow is not continuously increased; along with the increase of the traffic flow, the vehicle storage amount correspondingly increases; along with the reduction of the traffic flow, the vehicle storage amount is gradually reduced, and the vehicle running speed is gradually increased until the traffic state is reached;
when the vehicle running speed is lower than the vehicle speed corresponding to the maximum vehicle flow, the vehicle storage amount is correspondingly increased under the condition that the vehicle flow is not continuously increased or is increased; along with the reduction of the traffic flow, the vehicle storage amount is gradually reduced, and the vehicle running speed is gradually increased until a traffic state is reached.
Preferably, the lane installation detector comprises a microwave detector and a video detector, the microwave detector and the video detector simultaneously measure the speed of passing vehicles, the vehicle flow is calculated, data monitored by the microwave detector is taken as a main data, and data replacement is carried out on part of the main data by the data monitored by the video detector.
Preferably, the urban traffic network topological structure database comprises longitude and latitude coordinates of an urban area, an urban road network and intersection information, wherein the urban road network comprises road section numbers of each express way, main roads, secondary roads and branches, road section lengths, start and stop point information of road sections, access information of road sections, number of lanes of road sections, road section passing speed limit and main vehicle types of road sections, the intersection information comprises intersection numbers, longitude and latitude coordinates of intersections, intersection numbers and access information of intersections, the access information of road sections comprises one-way access and two-way simultaneous movement, and the access information of intersections comprises access information of intersection connecting roads.
Preferably, the vehicle positioning data judging module performs data judgment according to the vehicle running track data, the vehicle running speed data and the traffic flow data acquired by the data acquiring module, calculates an average running speed according to the vehicle running track obtained by the vehicle positioning module, performs data judgment according to the vehicle running speed data monitored by the lane installation detector, and determines that the data is one of basically consistent data, small data difference and large data difference.
Preferably, the traffic operation data adjusting module receives information that the data are basically consistent, and then adjusts the average running speed as the main data;
receiving information with small data difference, and adjusting data with high accuracy in the average running speed and vehicle running speed data to be main data;
and receiving the information with large data difference, and selecting the vehicle running speed data monitored by the lane installation detector as main data.
A method for monitoring and evaluating the running state of an urban traffic network comprises the following steps:
the method comprises the following steps: establishing an urban traffic network model according to an urban traffic network topological structure database, and making corresponding driving tracks on the urban traffic network model by vehicles driving on each road section according to vehicle positioning modules on the vehicles;
step two: calculating the average running speed of the vehicle according to the time when the vehicle starts to enter the road section A, the time when the vehicle leaves the road section A and the length of the road section A;
step three: the vehicle enters the road section A, the speed is measured in real time according to the lane installation detector, and the lane installation detector simultaneously calculates the traffic flow of the road section A;
step four: the vehicle positioning data judgment module is used for carrying out data judgment on the data collected by the received data collection module, and the traffic operation data adjustment module is used for carrying out data adjustment after judgment to obtain a complete and accurate numerical value;
step five: the traffic running state evaluation module compares the vehicle running speed with the vehicle speed corresponding to the maximum traffic flow, and then performs real-time state judgment and future traffic state judgment on the road section A by combining real-time traffic flow data.
Compared with the prior art, the invention has the beneficial effects that:
1. in the invention, the traffic running state evaluation module compares the running speed of the vehicle with the vehicle speed corresponding to the maximum traffic flow, and when the running speed of the vehicle is greater than the vehicle speed corresponding to the maximum traffic flow, the vehicle is in a passing state under the condition that the traffic flow is not continuously increased or reduced; the running speed of the vehicle is gradually reduced along with the increase of the traffic flow; the vehicle is in a crowded state under the condition that the vehicle speed corresponding to the vehicle running speed and the maximum vehicle flow is basically kept at ordinary times, which means that the vehicle flow is not continuously increased; along with the increase of the traffic flow, the vehicle storage amount correspondingly increases; along with the reduction of the traffic flow, the vehicle storage amount is gradually reduced, and the vehicle running speed is gradually increased until the traffic state is reached; when the vehicle running speed is lower than the vehicle speed corresponding to the maximum vehicle flow, the vehicle storage amount is correspondingly increased under the condition that the vehicle flow is not continuously increased or is increased; along with the reduction of the traffic flow, the vehicle storage amount is gradually reduced, and the vehicle running speed is gradually increased until a traffic state is reached. The traffic running state evaluation module compares the vehicle running speed with the vehicle speed corresponding to the maximum traffic flow, and then real-time state judgment and future traffic state judgment are carried out on the road section A by combining with real-time traffic flow data, so that the problem that the judgment of the traffic flow is insufficient to predict and evaluate the subsequent traffic running state because the running state of the current urban traffic network is judged basically by the size of the traffic flow but is influenced by other factors only by the traffic flow judgment is solved;
2. in the invention, the running speed of a vehicle in a certain road section can be obtained by combining an urban traffic network topological structure database and a vehicle positioning module, but the monitoring of the vehicle speed and the total traffic flow of each vehicle at an intersection and a road section is realized by a lane installation detector, a vehicle positioning data judging module judges data according to vehicle running track data, vehicle running speed data and traffic flow data acquired by a data acquisition module, calculates the average running speed according to the vehicle running track acquired by the vehicle positioning module, judges the data according to the vehicle running speed data monitored by the lane installation detector, and adjusts the average running speed to be main data when receiving the information of basically consistent data; receiving information with small data difference, and adjusting data with high accuracy in the average running speed and vehicle running speed data to be main data; and receiving the information with large data difference, and selecting the vehicle running speed data monitored by the lane installation detector as main data. Therefore, the authenticity and the accuracy of the monitored data information are ensured, and a good data recording basis is laid for the accurate judgment of the subsequent traffic running state.
Drawings
Fig. 1 is a system schematic diagram of an urban traffic network operation state monitoring and evaluation method and system of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1, an embodiment of the present invention: a monitoring and evaluating system for urban traffic network running state comprises a vehicle, a vehicle positioning module is arranged on the vehicle, the output end of the vehicle positioning module is connected with the input end of a data acquisition module, the output end of the data acquisition module is connected with the input end of a vehicle positioning data judging module, the input end of the data acquisition module is connected with the output end of a lane installation detector, the output end of the data acquisition module is connected with the input end of a traffic running data adjusting module, the input end of the traffic running data adjusting module is connected with the output end of the vehicle positioning data judging module, the input end of the vehicle positioning data judging module is connected with the output end of an urban traffic network topological structure database, the output end of the traffic running data adjusting module is connected with the input end of a traffic running state calculating module, the output end of the traffic running state calculating module is connected with the input end of the traffic running state evaluating module, the input end of the traffic running state evaluation module is connected with the output end of the urban traffic network topological structure database;
the vehicle is a main driving tool of an urban traffic network;
the vehicle positioning module is a positioning structure arranged on a vehicle and realizes real-time recording of a vehicle running track;
the lane installation detector is monitoring equipment installed on a lane and realizes the monitoring of the speed and the total traffic flow of each vehicle at an intersection and a road section;
the data acquisition module is used for acquiring and transmitting the acquired vehicle running track data, the vehicle running speed data and the vehicle flow data;
the urban traffic network topological structure database is used for realizing the integration of objective urban traffic network data and subjective vehicle driving data;
the vehicle positioning data judgment module receives the data collected by the data collection module and judges the received data;
the traffic operation data adjusting module receives the judgment information of the vehicle positioning data judging module and adjusts the data of the traffic operation data according to the judgment information;
the traffic operation state calculation module is used for receiving the traffic operation data sent by the traffic operation data adjustment module and performing data integration calculation;
and the traffic running state evaluation module receives the calculation data of the traffic running state calculation module and evaluates the traffic running state of the road section or the called intersection.
Furthermore, the lane installation detector comprises a microwave detector and a video detector, the microwave detector and the video detector simultaneously measure the speed of passing vehicles, the vehicle flow is calculated, data monitored by the microwave detector is used as a main data, and data replacement is carried out on part of the main data by the data monitored by the video detector.
Further, the urban traffic network topological structure database comprises longitude and latitude coordinates of an urban area, an urban road network and intersection information, wherein the urban road network comprises road section numbers of each express way, main roads, secondary roads and branches, road section lengths, starting and stopping point information of the road sections, access information of the road sections, the number of lanes of the road sections, road section passing speed limit and main vehicle types of the road sections, the intersection information comprises intersection numbers, longitude and latitude coordinates of intersections, the number of intersections and access information of the intersections, the access information of the road sections comprises one-way access and two-way simultaneous access, and the access information of the intersections comprises access information of intersections connecting roads. The topological structure database of the urban traffic network basically comprises all data information of roads, and an urban traffic network model can be established according to the topological structure database of the urban traffic network.
Further, the vehicle positioning data judging module performs data judgment according to vehicle running track data, vehicle running speed data and traffic flow data acquired by the data acquisition module, calculates an average running speed according to the vehicle running track obtained by the vehicle positioning module, performs data judgment according to the vehicle running speed data monitored by the lane installation detector, and determines that the judgment result is one of data basically consistent, data difference small and data difference large.
Further, the traffic operation data adjusting module receives the information that the data are basically consistent, and then the average running speed is adjusted to be the main data; at this time, the vehicle runs on the road section at a basically constant speed and runs on the road section all the time, and then one for data calculation is selected;
receiving information with small data difference, and adjusting data with high accuracy in the average running speed and vehicle running speed data to be main data; the data difference is small, the vehicle speed of the vehicle may fluctuate at the monitoring position, but the overall influence is small, and the accuracy is high in the data difference, so that the accuracy of subsequent calculation is guaranteed;
receiving information with large data difference, selecting vehicle running speed data monitored by a lane installation detector as main data; if the difference is large, the situation that the vehicle runs on the road section discontinuously is shown, or the vehicle running speed difference caused by the situation that the vehicle has problems, and the like, is large, the situation that the average speed cannot be corrected is taken, so that the vehicle running speed data monitored by the lane installation detector is selected as main data, and the situation that the vehicle runs on the road section is judged.
Further, the traffic running state calculation module calculates the maximum traffic flow carried by the road, and calculates the vehicle speed corresponding to the maximum traffic flow according to the maximum traffic flow, and the calculation can be performed according to a linear relation model proposed by Greenwich Schltz, or other model calculations can be selected, and a proper calculation model is selected according to the actual situation.
Further, the traffic running state evaluation module compares the running speed of the vehicle with the speed corresponding to the maximum traffic flow, and when the running speed of the vehicle is greater than the speed corresponding to the maximum traffic flow, the vehicle is in a passing state under the condition that the traffic flow is not continuously increased or reduced; the running speed of the vehicle is gradually reduced along with the increase of the traffic flow;
the vehicle is in a crowded state under the condition that the vehicle speed corresponding to the vehicle running speed and the maximum vehicle flow is basically kept at ordinary times, which means that the vehicle flow is not continuously increased; along with the increase of the traffic flow, the vehicle storage amount correspondingly increases; along with the reduction of the traffic flow, the vehicle storage amount is gradually reduced, and the vehicle running speed is gradually increased until the traffic state is reached;
when the vehicle running speed is lower than the vehicle speed corresponding to the maximum vehicle flow, the vehicle storage amount is correspondingly increased under the condition that the vehicle flow is not continuously increased or is increased; along with the reduction of the traffic flow, the vehicle storage amount is gradually reduced, and the vehicle running speed is gradually increased until a traffic state is reached.
The current traffic running state of the road section can be directly judged according to the real-time vehicle running speed and the vehicle speed corresponding to the fixed maximum vehicle flow; and then the running state of the road section within a period of time in the future can be directly judged according to the increase condition of the current traffic flow, the time span of monitoring and evaluation is wider, and the prediction result of the running state within a period of time in the future is more accurate.
A method for monitoring and evaluating the running state of an urban traffic network comprises the following steps:
the method comprises the following steps: establishing an urban traffic network model according to an urban traffic network topological structure database, and making corresponding driving tracks on the urban traffic network model by vehicles driving on each road section according to vehicle positioning modules on the vehicles;
step two: calculating the average running speed of the vehicle according to the time when the vehicle starts to enter the road section A, the time when the vehicle leaves the road section A and the length of the road section A;
step three: the vehicle enters the road section A, the speed is measured in real time according to the lane installation detector, and the lane installation detector simultaneously calculates the traffic flow of the road section A;
step four: the vehicle positioning data judgment module is used for carrying out data judgment on the data collected by the received data collection module, and the traffic operation data adjustment module is used for carrying out data adjustment after judgment to obtain a complete and accurate numerical value;
step five: the traffic running state evaluation module compares the vehicle running speed with the vehicle speed corresponding to the maximum traffic flow, and then performs real-time state judgment and future traffic state judgment on the road section A by combining real-time traffic flow data.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. The utility model provides an urban traffic road network running state monitoring evaluation system, includes the vehicle, its characterized in that: the vehicle is provided with a vehicle positioning module, the output end of the vehicle positioning module is connected with the input end of a data acquisition module, the output end of the data acquisition module is connected with the input end of a vehicle positioning data judgment module, the input end of the data acquisition module is connected with the output end of a lane installation detector, the output end of the data acquisition module is connected with the input end of a traffic operation data adjustment module, the input end of the traffic operation data adjustment module is connected with the output end of the vehicle positioning data judgment module, the input end of the vehicle positioning data judgment module is connected with the output end of an urban traffic network topology structure database, the output end of the traffic operation data adjustment module is connected with the input end of a traffic operation state calculation module, and the output end of the traffic operation state calculation module is connected with the input end of a traffic operation state evaluation module, the input end of the traffic running state evaluation module is connected with the output end of the urban traffic network topological structure database;
the vehicle is a main driving tool of an urban traffic network;
the vehicle positioning module is a positioning structure arranged on a vehicle and realizes real-time recording of a vehicle running track;
the lane installation detector is monitoring equipment installed on a lane and realizes the monitoring of the speed and the total traffic flow of each vehicle at an intersection and a road section;
the data acquisition module is used for acquiring and transmitting the acquired vehicle running track data, the vehicle running speed data and the vehicle flow data;
the urban traffic network topological structure database is used for realizing the integration of objective urban traffic network data and subjective vehicle driving data;
the vehicle positioning data judgment module receives the data collected by the data collection module and judges the received data;
the traffic operation data adjusting module receives the judgment information of the vehicle positioning data judging module and adjusts the data of the traffic operation data according to the judgment information;
the traffic operation state calculation module is used for receiving the traffic operation data sent by the traffic operation data adjustment module and performing data integration calculation;
the traffic running state evaluation module receives the calculation data of the traffic running state calculation module and evaluates the traffic running state of the road section or the called intersection;
the traffic running state calculation module calculates the maximum traffic flow borne by the road, and calculates the vehicle speed corresponding to the maximum traffic flow;
the traffic running state evaluation module compares the running speed of the vehicle with the speed corresponding to the maximum traffic flow, and when the running speed of the vehicle is greater than the speed corresponding to the maximum traffic flow, the vehicle is in a passing state under the condition that the traffic flow is not continuously increased or reduced; the running speed of the vehicle is gradually reduced along with the increase of the traffic flow;
the vehicle is in a crowded state under the condition that the vehicle speed corresponding to the vehicle running speed and the maximum vehicle flow is basically kept at ordinary times, which means that the vehicle flow is not continuously increased; along with the increase of the traffic flow, the vehicle storage amount correspondingly increases; along with the reduction of the traffic flow, the vehicle storage amount is gradually reduced, and the vehicle running speed is gradually increased until the traffic state is reached;
when the vehicle running speed is lower than the vehicle speed corresponding to the maximum vehicle flow, the vehicle storage amount is correspondingly increased under the condition that the vehicle flow is not continuously increased or is increased; along with the reduction of the traffic flow, the vehicle storage amount is gradually reduced, and the vehicle running speed is gradually increased until a traffic state is reached.
2. The system for monitoring and evaluating the running state of the urban traffic network according to claim 1, wherein: the lane installation detector comprises a microwave detector and a video detector, wherein the microwave detector and the video detector simultaneously measure the speed of passing vehicles, the vehicle flow is calculated, data monitored by the microwave detector is used as a main data, and data replacement is performed on part of the main data by the data monitored by the video detector.
3. The system for monitoring and evaluating the running state of the urban traffic network according to claim 1, wherein: the urban traffic network topological structure database comprises longitude and latitude coordinates of an urban area, an urban road network and intersection information, wherein the urban road network comprises road section numbers of each express way, main roads, secondary roads and branches, road section lengths, starting and stopping point information of the road sections, access information of the road sections, the number of lanes of the road sections, road section passing speed limit and main vehicle types of the road sections, the intersection information comprises intersection numbers, longitude and latitude coordinates of intersections, intersection numbers and access information of the intersections, the access information of the road sections comprises one-way access and two-way simultaneous access, and the access information of the intersections comprises access information of intersections connecting roads.
4. The system for monitoring and evaluating the running state of the urban traffic network according to claim 1, wherein: the vehicle positioning data judging module is used for judging data according to vehicle running track data, vehicle running speed data and traffic flow data acquired by the data acquisition module, calculating average running speed according to the vehicle running track obtained by the vehicle positioning module, and judging data according to the vehicle running speed data monitored by the lane installation detector, wherein the judgment result is one of basically consistent data, small data difference and large data difference.
5. The system for monitoring and evaluating the running state of the urban traffic network according to claim 4, wherein: the traffic operation data adjusting module receives the information that the data are basically consistent, and then the average running speed is adjusted to be the main data;
receiving information with small data difference, and adjusting data with high accuracy in the average running speed and vehicle running speed data to be main data;
and receiving the information with large data difference, and selecting the vehicle running speed data monitored by the lane installation detector as main data.
6. An urban traffic network running state monitoring and evaluation method is realized based on the urban traffic network running state monitoring and evaluation system of any one of claims 1 to 5, and is characterized by comprising the following steps:
the method comprises the following steps: establishing an urban traffic network model according to an urban traffic network topological structure database, and making corresponding driving tracks on the urban traffic network model by vehicles driving on each road section according to vehicle positioning modules on the vehicles;
step two: calculating the average running speed of the vehicle according to the time when the vehicle starts to enter the road section A, the time when the vehicle leaves the road section A and the length of the road section A;
step three: the vehicle enters the road section A, the speed is measured in real time according to the lane installation detector, and the lane installation detector simultaneously calculates the traffic flow of the road section A;
step four: the vehicle positioning data judgment module is used for carrying out data judgment on the data collected by the received data collection module, and the traffic operation data adjustment module is used for carrying out data adjustment after judgment to obtain a complete and accurate numerical value;
step five: the traffic running state evaluation module compares the vehicle running speed with the vehicle speed corresponding to the maximum traffic flow, and then performs real-time state judgment and future traffic state judgment on the road section A by combining real-time traffic flow data.
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