Correction method of bicycle influencing turning vehicle saturation flow rate at signal crossing

Abstract

The invention discloses a correction method of bicycle impact on saturation volume rate of turning motor vehicles at a signalized intersection, which can be applied to calculating timing of signal control at the intersection. The correction method divides a conflict between bicycles and turning motor vehicles into two phases by studying different states of bicycles which cross the intersection and defines a conflict area; in the first stage, the gathered waiting bicycles during the red light period cross the intersection in the manner of bicycle groups with high density and low freedom, and the conflict is analyzed based on time occupation ratio of the conflict area by bicycles; in the second stage, bicycles arriving randomly at the intersection in a random manner with low density and high freedom, and the conflict is analyzed based on a crosscutting gap theory, and an influence coefficient of the bicycles on the saturation volume rate of turning motor vehicles is calculated. By applying the timing at intersection calculated by adopting the correction method of the bicycle impact on saturation volume rate of turning motor vehicles at a signalized intersection to the practice, the conflict between motor vehicles and non-motorized vehicles at the intersection can be relieved, traffic capacity of the intersection can be improved, and delay of motor vehicles at the intersection can be reduced.

Description

technical field

[0001] The invention relates to a method for correcting the influence of bicycles on the saturation flow rate of turning vehicles at signalized intersections, which can be used to calculate the timing of signal control at intersections and belongs to the field of traffic control. Background technique

[0002] China is a big country of bicycles. Mixed traffic is a basic feature of Chinese traffic. For a long time, mixed traffic at intersections has been a major difficulty in urban traffic management in my country, and it is easy to cause chaos at intersections, causing traffic accidents, non-motor vehicles and Traffic conflicts between motor vehicles are also often an important factor reducing the capacity of intersections. The impact of bicycles on turning vehicles at intersections is mainly reflected in the saturation flow rate of turning vehicles, and the accuracy of the saturation flow rate of motor vehicles at intersections will directly affect the efficie...

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