Method and device for two-way signal coordination design of arterial lines in oversaturated traffic state

Abstract

The invention discloses a method and device for bi-directional signal coordination design of an arterial line in an oversaturated traffic state, wherein the method includes: acquiring geometric parameters, traffic parameters, control parameters, and traffic flow data of a time period to be optimized for an arterial line in an oversaturated traffic state; The trunk line is the modeling object, and an optimization model aiming at maximizing the weighted throughput in both directions of the trunk line is constructed, and the throughput of the trunk line is maximized by adjusting the green light duration; the green light duration of each phase at each intersection of the trunk line is obtained by solving the model; The intersection is the modeling object, and an optimization model with the goal of minimizing the weighted average vehicle delay in the two directions of the main line going straight is constructed, and the average vehicle delay is minimized by adjusting the phase difference and phase scheme; the solution model obtains the intersection and its upstream intersection The phase difference between and the phase scheme of each intersection. The invention establishes and solves the throughput maximization model and the average vehicle delay minimization model, and can effectively improve the traffic capacity and service level of the main line.

Description

technical field [0001] The invention belongs to the field of traffic safety control, and in particular relates to a method and device for coordinating two-way signals of urban main lines under oversaturated traffic conditions based on LWR (Lighthill Whitham Richards) shock wave theory. Background technique [0002] With the prominent contradiction between road supply and demand, the problem of urban traffic congestion is becoming more and more serious, especially in the morning and evening peak hours, many urban arterial roads are oversaturated. If the control and coordination cannot be carried out reasonably, undesirable phenomena such as queuing and stranded vehicles, overflow and even "deadlock" at intersections may occur, which will aggravate congestion. Signal coordination control is an effective measure to maintain traffic order and improve traffic efficiency, and can effectively alleviate traffic congestion. my country's urban arterials are mainly two-way roads, and ...

AI Technical Summary

Problems solved by technology

Therefore, it can be considered that the adaptability of the existing technology to the coordinated control of the two-way signal of the arterial line in the oversaturated traffic state is insufficient

Images