Intersection signal optimizing control method in heterogeneous traffic state

Abstract

The invention discloses an intersection signal optimizing control method in a heterogeneous traffic state. The method comprises the following steps that an intersection with heterogeneous traffic flow convergence serves as a research object, a video detector is installed on the intersection, and heterogeneous traffic characteristics of all entrance lanes are identified; a vehicle driving simulation model is established according to the heterogeneous traffic characteristics of all the entrance lanes, heterogeneous traffic flows are simulated, and saturation flows of all the entrance lanes are obtained; signal parameters are optimized on the basis of an all-phase equisaturation principle, and a signal timing plan of the intersection is obtained. By means of the intersection signal optimizing control method in the heterogeneous traffic state, maximum utilization of traffic capacity of the intersection can be achieved, delay of the heterogeneous traffic flows for passing through the intersection is greatly reduced, and the operating efficiency of the signal intersection is improved.

Description

technical field [0001] The invention relates to a new intersection signal control method, in particular to an intersection signal optimization control method in a heterogeneous traffic state. Background technique [0002] Heterogeneous traffic refers to the state in which vehicles with different power performances and different physical sizes are mixed together, which is a common traffic feature in the traffic of small and medium-sized cities in my country. The conflict and interference between motor vehicles and non-motor vehicles at level signalized intersections has seriously affected the efficiency of the intersection, increased traffic safety hazards, aggravated traffic congestion, and caused huge direct and indirect economic losses. Heterogeneous traffic is a nonlinear, strongly stochastic and time-varying complex system, which has three typical characteristics: highly mixed vehicle types, no lane planning, and vehicle steering interference with each other. However, t...

AI Technical Summary

Problems solved by technology

However, the existing intersection signal control method is mainly based on motor vehicles, and it is not suitable for the intersection signal control under the unique heterogeneous traffic conditions of small and medium-sized cities in my country from a single, static point of view.

Therefore, traditional signal control methods are difficult to efficiently control

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