Fully inductive coordination signal control method based on allowable green light ending period

Abstract

A fully inductive coordination signal control method based on an allowable green light ending period is mainly characterized by comprising the steps of: facing signal control crossings along a trunk road, on the basis of a background signal timing plan, and defining the allowable green light ending period for each vehicle phase; taking the green light ending time in the background signal timing plan as a boundary, and dividing the allowable green light ending period as a green light early breaking time window and a green light delaying time window; determining time window values according to a certain ratio of the signal period time, and selectively endowing the values with non-coordinated phases and coordinated phases; distributing detectors at 40m upstream of stop lines of motor vehicle phase approaches; when the green light early breaking time window or the green light delaying time window of the current phase is opened, determining to delay or cut off the green light according to a headway obtained in real time, and forcedly cutting off the green light at an end point of the allowable green light ending period. The method can ensure and further improve the continuous advance effect of the vehicles along the trunk road as far as possible, and simultaneously does not sacrifice the integral control performance of the crossing.

Description

technical field [0001] The invention belongs to the technical field of intelligent traffic control, and relates to a full-induction coordinated signal control method. Background technique [0002] Coordinated signal control is to realize the linkage control of traffic lights at short-distance intersections along urban arterial roads, so that some vehicles from the main direction of the upstream intersection can pass through several downstream intersections with less travel time and parking times. With the development and popularization of traffic data detection technology, inductive coordinated signal control is gradually replacing timing coordinated signal control, becoming the main working mode of urban traffic signal control system. [0003] According to different technical characteristics, the inductive coordination signal control method is divided into two categories: (1) full inductive type, that is, detectors are arranged on all entrance lanes where the operation of m...

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Problems solved by technology

[0013] 2. Once the multiple non-coordinated phases before the coordinated phase cut off the green light in advance, the excessive green light time released by them may cause the coordinated phase to turn on the green light significantly in advance;

[0015] 4. When both the upstream and downstream coordination phases turn on the green light according to the background plan, it can be basically guaranteed but cannot further improve the effect of vehicle progress;

[0016] 5. When the upstream coordination phase turns on the green light substantially ahead of time, and the downstream coordination phase turns on the green light slightly ahead of time or according to the background plan, the convoy from the upstream will be blocked by vehicles queuing up during the red light of the phase before reaching the stop line of the downstream coordination phase Slow down and stop, the effect of the vehicle will be seriously damaged;

[0017] 6. When the upstream coordination phase is slightly advanced or the green light is turned on according to the background plan, and the downstream coordination phase is greatly advanced to turn on the green light, the vehicle fleet from the upstream has completely dissipated during the red light period of the phase before reaching the stop line of the downstream coordination phase. There is an obvious waste of green light time, which can guarantee but cannot further improve the effect of vehicle on-going

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