Method for quickly generating intersection signal timing scheme tending to target saturation

Abstract

The invention discloses a method for quickly generating an intersection signal timing scheme tending to target saturation in the field of traffic signals, which comprises the following steps of: S1, acquiring traffic flow parameters of each direction group of an intersection, and defining straight traffic flow in each direction and left-turn traffic flow in the opposite direction as a conflict traffic flow pair; s2, based on the traffic flow ratio, counting a key traffic flow combination K formed by the conflict traffic flow pairs of each direction group and a corresponding non-key traffic flow combination Knot, and selecting the key traffic flow combination K with the maximum flow ratio sum and the corresponding non-key traffic flow combination Knot as target objects; s3, adjusting the green light time of each traffic flow in the key traffic flow combination K in the target object according to the expected saturation, and determining a signal control period; and S4, adjusting the green light time of each traffic flow in the non-key traffic flow combination Knot in the target object according to the expected saturation and the direction green light total time. The method has no application limitation, and the optimization result is fast and accurate.

Description

technical field [0001] The invention relates to the field of traffic signals, in particular to a method for rapidly generating an intersection signal timing scheme that tends to target saturation. Background technique [0002] In essence, traffic signal control is the allocation of the time right of way for different turning traffic flows at the intersection. On the premise of reducing traffic conflicts and ensuring the traffic order, the traffic capacity or traffic efficiency in all directions of the intersection can be improved as much as possible. Signal timing scheme is an important parameter in signal control. So far, the methods of signal timing can be divided into three types: manual empirical method, formula method and heuristic solution method. [0003] The manual experience method is the most traditional method. On the basis of designing the initial scheme, the timing scheme is gradually adjusted through continuous observation of the actual effect, so as to obtain...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method for quickly generating a signal timing scheme at an intersection tending towards the target saturation, so as to solve the problems of slow optimization speed and many restrictive conditions of the current signal timing scheme

Images