A Calculation Method of Queue Length at Road Intersection

Abstract

The invention discloses a road intersection queuing length calculation method, and the method comprises the steps: 1, building a road intersection queuing length model: Lq=(Q2-Q1)*LC, and calculating the road intersection queuing length through the road intersection queuing length model; 2, carrying out the correction of the road intersection queuing length model through formula (1), wherein the formula (1) meets the formulas: (2), (3) and (4); 3, carrying out the accumulated error correction of the road intersection queuing length obtained at step 1 through the following method: (a), zero value correction: adjusting the road intersection queuing length to be zero if there is no vehicle passing by a detector I and a detector II in a certain time period and there is no vehicle staying between the two detectors I and II; (b), full value correction: adjusting the road intersection queuing length to be (L2-L1) if there is no vehicle passing by the detector I and the detector II in a certain time period and there are more vehicles staying between the two detectors I and II. The method can calculate the road intersection queuing length in real time through iterative computation.

Description

technical field [0001] The invention relates to a method for calculating the queuing length at road crossings, which is applied to the field of traffic operation management at road crossings. Background technique [0002] In recent years, the problem of traffic congestion at urban road intersections in my country has become increasingly serious. As the number of vehicles continues to rise, urban roads are increasingly congested, resulting in frequent urban road traffic accidents. Once congestion occurs on the road, it will directly reduce the operating efficiency of the road network and easily induce secondary accidents. An effective way to reduce the negative impact of traffic accidents is to calculate the impact of congestion in real time. According to the calculation, the time when the road reaches the maximum queuing length can be obtained, which provides a reliable theoretical basis for taking effective measures to deal with congestion. Queue length is an important in...

AI Technical Summary

Problems solved by technology

However, the location of vehicle collisions on the road is random, and may occur in front of the fixed detector or behind the fixed detector. The method disclosed in the above patent document cannot calculate the actual location of all collisions, and has poor versatility.

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