A control method for straight right variable directional lanes considering the conflict between pedestrians and right-turning vehicles

Abstract

The invention discloses a control method of a straight right variable directional lane considering conflicts between pedestrians and right-turning vehicles. Under the efficiency of traffic flow, the conflict between right-turning traffic flow and pedestrians crossing the street is reduced. The method of the present invention mainly includes acquisition of intersection road and traffic information, estimation of the proportion of right-turning vehicles in straight-right directional lanes, saturated traffic capacity of right-turning traffic flow within the green light time, and variable directional lane function based on traffic capacity of right-turning traffic flow Judgment and other steps. The present invention can convert the function of the variable guiding lane into a dedicated right-turning lane when the conflict between pedestrians crossing the street and right-turning vehicles increases, so as to prevent straight-going vehicles from entering the low-efficiency lane and ensure the safety of traffic at the intersection. And when the conflict between right-turning vehicles and pedestrians crossing the street is not serious, the variable guiding lane can be converted into a straight-right shared lane, so as to improve the utilization rate of space-time resources at road intersections.

Description

technical field [0001] The invention relates to the field of traffic management and control, in particular to a method for estimating the proportion of straight-right vehicles in a straight-right variable directional lane, calculating the saturation capacity of right-turn traffic flow, and determining the right-turn vehicle ratio under the consideration of conflicts between crossing pedestrians and right-turning vehicles at intersections. A method for judging the switching of the steering lane function. Background technique [0002] Usually, when the flow of right-turning traffic is less than 300veh / h / ln, or the flow of straight-going traffic does not exceed 450veh / h / ln, and limited by space conditions, it is not necessary to set up a special right-turning entrance lane, and share the far right side with right-turning and straight-going traffic. The way of guiding the lane, so that the right-turning traffic obtains the right of way during the red light of the straight traffi...

AI Technical Summary

Problems solved by technology

The dynamics of traffic flow make the traffic flow of straight-going and right-turning vehicles in different time periods constantly changing. Usually, the intersection signal timing scheme is changed to adapt to the dynamics of traffic flow. As far as the road is concerned, it is difficult to improve the conflicts between right-turning vehicles and straight-going traffic in the same direction, as well as crossing pedestrians and non-motorized vehicles caused by the increase in right-turning traffic.

At present, the optimization of space resources for intersection entrances mostly focuses on how to match the guide lane with the traffic demand of left-turn traffic flow and through traffic flow, while ignoring the influence of right-turn traffic flow on the through traffic flow and cross-street pedestrian flow. Low circulation efficiency, escalating conflicts between pedestrians and vehicles at intersections, etc.

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