Single-point intersection signal timing plan evaluation method in unsaturated state

Abstract

The invention discloses a single-point intersection signal timing plan evaluation method in an unsaturated state and belongs to the technical field of traffic control. The method includes obtaining measured values of different evaluation indexes before and after signal timing plan optimization in the unsaturated state, wherein each evaluation index includes time headway and delay; according to the measured values of the different evaluation indexes before and after signal timing plan optimization, calculating the difference values of the indexes before and after optimization on different phases of a single-point intersection; according to the difference values of the indexes before and after optimization on the different phases of the single-point intersection, evaluating the optimization directions of the different phases in the signal timing plan. According to the invention, by taking the time headway and the delay on the different phases of an entrance way of the single-point intersection as the evaluation indexes of the signal timing plan in the unsaturated state, the optimization directions of the phases can be indicated clearly and an optimized step size is obtained, so that the signal timing plan can be optimized according to the optimization directions of the different phases and phase utilization rate can be increased.

Description

technical field [0001] The invention relates to the technical field of traffic control, in particular to an evaluation method for a signal timing scheme at a single-point intersection in an unsaturated state. Background technique [0002] At present, the increasing congestion of urban traffic has attracted social attention, which has brought unprecedented pressure to urban traffic management. In the management of urban road intersections, the use of intersection signal timing schemes can effectively regulate the traffic at intersections. Therefore, the role of traffic signal timing design is becoming more and more significant. However, the current timing scheme often has some problems in practical application, which leads to low traffic efficiency at road intersections. Therefore, it is necessary to evaluate the traffic signal allocation, and optimize the timing scheme according to the evaluation results. [0003] The evaluation of existing signal timing schemes at interse...

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Problems solved by technology

[0005] The present invention provides an evaluation method for a single-point intersection signal timing scheme in an unsaturated state to solve the problem that the existing signal timing scheme evaluation method cannot analyze the rationality of each phase duration in the signal timing scheme

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