A method for predicting traffic flow diversion after left-hand ban at urban intersections

Abstract

The invention discloses a traffic flow transfer prediction method for an urban intersection after left turn restriction, belongs to the technical field of traffic management and control, and relates to the prediction technology of the traffic flow transfer of the urban intersection after left turn restriction. The method comprises the steps: determining the number of intersections of an urban trunk road and secondary road in a research area, building a rectangular coordinate system, determining the coordinates of all intersections, collecting current traffic flow, and calculating the intervalsof intersections and the detouring distance after right turn; estimating a detouring path of a vehicle in three modes of advanced left turn, delayed left turn and right U-turn after left turn restriction, selecting negative index distribution for calculating a resistance function of path detouring, predicting the transfer mode and transfer proportion of the traffic flow through the full consideration to the impact on the flow transfer of the direct and left turn flow of a plurality of intersections at upstream and downstream sides from a left turn restriction intersection, and calculating thetraffic flow of each inlet lane of each intersection after the flow transfer. The method can effectively evaluate and guarantee the benefits of the left turn restriction scheme, and provides an effective and practical theoretical basis for the scientific formulating of the left turn restriction scheme.

Description

technical field [0001] The invention belongs to the field of traffic engineering, relates to the technical field of traffic management and control, and more specifically relates to a method for predicting traffic flow transfer after a left-hand ban at an urban intersection. Background technique [0002] In order to alleviate the problem of traffic congestion and reduce the adverse impact of left-turn traffic flow on intersections, prohibiting left-turns, that is, prohibiting left turns, has become a traffic management method commonly used in many cities at home and abroad to alleviate traffic congestion on urban arterial roads and secondary arterial roads. , taking China as an example, at present, most large and medium-sized cities in China adopt the ban on the left as one of the main traffic management methods in the field. Among them, as of November 2015, Kunming has implemented a ban on the left at 40 intersections. In February 2016, Hangzhou In May 2017, Shijiazhuang Cit...

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