| Traffic simulation refers to the use of system simulation technology to simulate traffic behavior,and is the application of computer simulation technology in the field of traffic engineering.Traffic simulation simulates the traffic behavior in real scenes and simulates the effects of various traffic behaviors to assist in solving traffic problems in real scenes.In traffic simulation,accurate and complete road network information and road condition information directly affect the reliability of later simulation results.Therefore,the construction of the simulation road network and the accurate labeling of the initial road condition information have become the key issues in traffic simulation research.Based on this,this paper carried out the following research work:(1)This paper proposes a custom road network model,and designs a data migration method based on the custom road network model,which can realize the rapid migration of electronic map road network to intelligent traffic simulation road network.The method can not only improve the construction efficiency of the road network in traffic simulation,but also construct the road network model with accurate geometric information and complete topology information,which is in line with the requirements of traffic simulation.(2)This paper designs a method based on online electronic map to pick up road network condition information,and supports the export of road network condition data to common simulation software for display.According to the corresponding conversion relationship between the road condition data and the information such as the speed and density of the simulated vehicle,the road condition information on the initial road network can be truly reproduced as the distribution situation and the driving speed of the existing vehicle,which is a generation model of the target vehicle in the subsequent simulation.Basic data support is provided for the car-following model and the lane change model.(3)This paper designs and implements a simulation road network rapid modeling system.Based on the road network model construction method and road condition information acquisition technology proposed in the paper.the system realizes the practical application in the micro traffic simulation system.This paper verifies the time efficiency of the proposed method in establishing the simulated road network by comparing the time difference between the traditional road network modeling method and the road network modeling method.The road network and road condition information are imported into the simulation system for road network.Geometry,topological accuracy and other tests verify the effectiveness of the custom road network model. |
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