A spatiotemporal resource allocation method for paired intersections influenced by short left-turn lanes

Abstract

A paired intersection time-space resource allocation method affected by a turning-to-left short lane is suitable for designing a paired intersection signal control solution without or without the turning-to-left short lane. According to a traffic flow theory and operational research, short lane length and phase-effective green-lamp time length are used as decision variables, and a fact of equal periodical time length is used as a constraint condition, thereby establishing a paired intersection time-space resource allocation module and obtaining an optimal combination among the short lane length of each intersection, the periodical time length and a green ratio. The solving algorithm of the optimization module is programmed by means of MATLAB software. By means of traffic simulation software, a coordination signal control green time difference optimization method is presented, thereby obtaining an optimal controller green time difference. Traffic flow data and VISSIM software are used for verifying the new model and the new method. The verification results show that the new model and the new method have advantages of improving traffic flow operation performance through reasonably configuring the time-space resource of the paired intersection, reducing number of vehicle delay times and stopping times, and reducing intersection saturation. The paired intersection time-space resource allocation method affected by the turning-to-left short lane can be widely used for designing paired intersection signal timing solutions.

Description

technical field [0001] The invention belongs to the field of intelligent traffic control, and relates to a paired intersection widening section design and signal timing optimization method suitable for short lanes with (without) left turns. Background technique [0002] At present, there are frequent traffic congestion problems in major and medium-sized cities, the social and economic development of the cities are severely restricted, and people's travel and life are also greatly affected. When the left-turning traffic volume is large, the intersection conflict between straight-going and left-turning traffic cannot be ignored. This conflict not only reduces the capacity of the straight-going traffic flow and the left-turning traffic flow, but also threatens the operation safety of both. In order to separate the conflict between the left-turning traffic flow and the straight-going traffic flow, the left-turning phase protection is often designed. In this case, a dedicated le...

AI Technical Summary

Problems solved by technology

In this case, how to rationally allocate the space-time resources of pairs of intersections is related to the performance of traffic flow and the efficiency of intersections, but there are few studies on this aspect

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