Method for setting initial green light time based on pedestrian and bicycle group

Abstract

The invention discloses a method for setting an initial green light time based on a pedestrian and bicycle group, which relates to a semi-actuated signal timing algorithm of a two phase signalized intersection and is used for determining an initial green light time meeting an induction phase of queuing left-turning vehicles at a signalized intersection under semi-actuated control. The method mainly comprises the following steps of: observing a critical gap and an average acceptable gap provided by the pedestrian and bicycle group which is in conflict with left-turning vehicles; determining the relation between average acceptable gap time and the number of traversable left-turning vehicles; determining the arrival rate of the left-turning vehicles arriving during red light period and the initial green light period; and determining the relation between left-turning vehicle arrival and dispersive balance. The invention improves the reasonability of the setting of actuated control phase initial green light time, can provide sufficient passing time for the left-turning vehicles to pass through a crossing and improve the control efficiency of the whole crossing.

Description

technical field [0001] The method of setting the initial green light time based on pedestrian and bicycle groups involves a semi-inductive signal timing algorithm at two-phase signalized intersections, which is used to determine the initial green light time that satisfies the signalized intersection queuing left-turning vehicles under the semi-inductive control of the induction phase, which belongs to traffic signal control The field of timing technology. Background technique [0002] Traffic signal induction control is a real-time process control method implemented at signalized intersections with relatively large fluctuations in motor vehicle flow. Its signal timing parameters can be automatically adjusted within a certain range to adapt to changes in intersection traffic flow. The initial green light time is an important control parameter in the timing of the induction control signal. It is a fixed green light time preset for each signal at the initial stage to meet the q...

AI Technical Summary

Problems solved by technology

However, there are a large number of pedestrians and bicycles gathered on the crosswalk of domestic signalized intersections, so that the left-turning vehicles that have passed the stop line within the initial green light time of the induction control cannot pass through the intersection, and there is no follow-up vehicle arriving, the detector will no longer sense The vehicle allocation unit prolongs the green light time, switches the phase, and the conflicting phase obtains the right of way on the green light, so that the left-turning vehicles stranded by the interference of the pedestrian group will cause the congestion of the entire intersection, resulting in a serious decline in the control efficiency of the entire intersection, and at the same time give the intersection Traffic safety at the mouth brings difficulty

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