An Optimal Control Method for Intersection Signals in Heterogeneous Traffic States

Abstract

The invention discloses an intersection signal optimization control method in heterogeneous traffic state, comprising the following steps: Step 10) Taking the intersection where heterogeneous traffic flow converges as the research object, a video detector is installed at the intersection to identify each entrance road The heterogeneous traffic characteristics at each entrance; step 20) according to the heterogeneous traffic characteristics of each entrance road, establish a vehicle driving simulation model, simulate the heterogeneous traffic flow, and obtain the saturated flow of each entrance road; step 30) based on the equal saturation of each phase In principle, the signal parameters are optimized to obtain the signal timing at the intersection. The invention can realize the maximum utilization of the traffic capacity of the intersection, greatly reduce the delay of heterogeneous traffic flow passing through the intersection, and improve the operating efficiency of the signalized intersection.

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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