A method and device for simulating time-varying traffic state of urban expressway network
A traffic simulation and traffic state technology, applied in the field of traffic, can solve the problems that the calculation efficiency is difficult to apply to the urban expressway network, difficult to apply to the large-scale road network, and the time dimension change process of the traffic situation cannot be simulated.
Active Publication Date: 2022-06-21
SUZHOU UNIV
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Problems solved by technology
However, although the macroscopic four-stage traffic model can present the traffic conditions of the overall urban expressway network, it can only reflect the average level of the traffic conditions during the analysis period, and cannot simulate the changes in the time dimension of the traffic conditions that are particularly important for traffic management. process
Although the micro-traffic simulation model can describe time-varying traffic conditions, the defects in the route selection model make it difficult to apply to large-scale road networks. At the same time, the calculation amount of the micro-traffic simulation model is proportional to the number of simulated vehicles, and its computational efficiency is also difficult. Suitable for urban expressway network with huge traffic
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[0049] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure will be more thoroughly understood, and will fully convey the scope of the present disclosure to those skilled in the art.
[0050] The embodiment of the present invention provides a time-varying traffic state simulation method for an urban expressway network, such as figure 1 As shown, the method includes:
[0051] 101. Collect the road network information of the urban expressway and the coil inspection data of each section in the road network, and obtain the all-day travel distribution table and time-varying split ratio.
[0052] Wherein, the ...
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The invention discloses a method and device for simulating a time-varying traffic state of an urban expressway network, relating to the field of traffic technology, and the main purpose is to reproduce the process of forming and dissipating traffic congestion in the road network, and to evaluate the implementation effect of traffic control measures. The method includes: collecting road network information of urban expressways and loop inspection data of each section in the road network, and obtaining a whole-day travel distribution table and time-varying split ratio; determining road section traffic capacity of the road network according to the loop inspection data, And according to the road network information and the preset road network model construction software, the road network model of the urban expressway is constructed; the road network model, the all-day travel distribution table, the time-varying split ratio, and the preset vehicle attributes are imported into the preset dynamic In the traffic simulation model simulation software, the traffic capacity is input into the road network attribute information of the road network model, and the dynamic traffic simulation model of the urban expressway is constructed. The invention is suitable for the simulation of the time-varying traffic state of the urban expressway network.
Description
technical field [0001] The invention relates to the field of traffic technology, in particular to a method and device for simulating a time-varying traffic state of an urban expressway network. Background technique [0002] The urban expressway is the main skeleton of the urban road traffic network, and bears a large amount of urban motorized travel. However, under the background of the rapid development of social economy and motorization process, the growth rate of motor vehicle traffic demand in some cities is much faster than expected, and the traffic conditions of urban expressways are gradually congested, especially when traffic emergencies (such as severe weather, traffic accidents, When highway engineering construction accidents, etc.) occur, the operational efficiency and service level of road traffic drop significantly. Congestion of urban expressways not only causes traveler's time and economic loss, but also causes environmental pollution and energy waste. [00...
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IPC IPC(8): G06F30/20
CPCG06F30/20
Inventor 王翔赵坡谢金宏郑建颖赵晨阳温帅唐思颖
Owner SUZHOU UNIV