基于移位左转设计的T型交叉口通行能力分析

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中图分类号：U491 文献标志码：ADOI： 10.13714/j.cnki.1002-3100.2025.15.015

Abstract： Displaced left-turn （DLT） represents the most efficacious and pioneering intersection design， resolving the conflict between left turns and opposite straight traffic. In this paper，the design of T-shaped intersections based on displaced left-turn is implemented，and the optimization model of intersection parameters is established to minimize the average vehicle delayattheintersection. Theoperational performance of the T-shaped intersection based on the displaced left-turn design isverified through VISSIM simulation. The resultsindicatethattheaveragevehicledelayofthe T-intersectionbased onthe displacedleft-turn design is significantly reduced，and the intersection performance is substantially enhanced. The sensitivity test of the T-shaped displacedleft-turn intersection isdesigned to analyze its optimal application scenario.

Key words： traffic engineering; displaced left-turn; T-shaped intersection;VISSIM

0引言

现阶段的城市交通特点是：城市交通基础设施接近饱和状态，不易拓建，难以满足日益增长的交通需求。（剩余4879字）