Intersection vehicle running state modeling method and system provided with variable lane

Abstract

The invention provides a vehicle running state modeling method and system for an intersection provided with a variable lane, and belongs to the technical field of intelligent traffic. When the distance between a vehicle and an opening of the variable lane is larger than a first threshold value, the vehicle running state is obtained according to a straight lane car-following model; when the distance between the vehicle and the opening of the variable lane is smaller than a first threshold value, determining whether to enter the variable lane according to the state of the pre-signal lamp and a lane changing selection model; when the vehicle enters the intersection, the operation condition of the left-turning vehicle is obtained according to the curve model; according to the invention, accurate modeling evaluation of the vehicle state at the intersection is realized.

Description

technical field [0001] The invention relates to the technical field of intelligent transportation, and in particular, to a method and system for modeling a vehicle operating state at an intersection with variable lanes. Background technique [0002] The statements in this section merely provide background related to the present disclosure and do not necessarily constitute prior art. [0003] When the traffic volume of left-turning vehicles at an urban intersection is relatively large and the congestion problem cannot be solved by adjusting the timing of signal lights, consider setting the opposite exit road as a left-turning variable lane to alleviate the congestion of left-turning vehicles at the exit road and improve the traffic flow of the exit road. utilization. [0004] The inventor found that the existing vehicle operating state modeling at intersections has the following problems: [0005] (1) The current research on the microscopic model of the traffic flow at the ...

AI Technical Summary

Problems solved by technology

[0005] (1) The current research on the microscopic model of traffic flow at intersections is mainly at conventional intersections, and the microscopic modeling of vehicles at unconventional intersections is relatively scarce, and the research on the running status of vehicles passing through unconventional intersections needs to be improved;

[0006] (2) The timing optimization of signal lights at intersections that consider left-turn variable lanes is concentrated on a single intersection, and the coordinated control of signal timing at arterial intersections is mainly to coordinate the signal lights at main signal intersections, without considering unconventional intersections The effect of the pre-semaphore

[0007] (3) The optimization objectives of intersections considering variable lanes are mainly focused on delay time and queuing length, and there are relatively few studies on the change of vehicle pollutant emission values, and the existing evaluation indicators for variable lanes need to be improved

Images