Method and system for vehicle following and track change in microscopic traffic simulation

Abstract

The invention discloses a method and system for vehicle following and track change in microscopic traffic simulation. The method comprises the following steps of acquiring each current traffic parameter value corresponding to each simulation vehicle on a simulation track; making each current traffic parameter value satisfy a preset track change rule and determining the simulation vehicle which changes the track as a target vehicle; using a track change angle calculating formula to calculate a track change angle corresponding to the target vehicle; when the target vehicle changes the track at the corresponding track change angle and the current following speed, virtualizing the target vehicle into a virtual vehicle on the primary track and a target track; and when the lateral accumulated displacement amount of the changed track in the vertical track direction reaches the width between the central line of the primary track and the central line of the target track, changing the virtual vehicle on the target track into the corresponding target vehicle, and deleting the virtual vehicle on the primary track, so that the target vehicle follows and changes the track. The scheme is more corresponding to the practical traffic behavior, and city road planning design and traffic capacity assessment can be more effectively guided.

Description

technical field [0001] The invention relates to the field of simulation technology, in particular to a method and system for vehicle following and changing lanes in microscopic traffic simulation. Background technique [0002] Traffic flow research has become a research field of considerable social and economic value in countries all over the world, especially in developing countries. Due to the difficulty and complexity of traffic measurement, the progress of empirical research on traffic is slow, and computer simulation technology opens up opportunities for research in this field. The door of convenience. Computer simulation usually regards vehicle traffic as a multi-particle system with specific restriction rules to study the characteristics of traffic flow. [0003] In the simulation of traffic flow, the study of vehicle following and changing lanes is an important direction. The so-called car-following and lane-changing means that the initial running state of the vehi...

AI Technical Summary

Problems solved by technology

[0005] Therefore, the vehicle following and changing lanes in the simulation of the prior art does not conform to the actual traffic behavior, and cannot effectively guide the planning and design of urban roads and the assessment of traffic capacity

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