A COMPOSITIONAL APPROACH FOR TRAFFIC DISTRIBUTION EVALUATION OF TRIPLE LEFT-TURN LANES FROM AN INDIVIDUAL PERSPECTIVE

IF 1.3 4区工程技术 Q3 TRANSPORTATION SCIENCE & TECHNOLOGY Transport Pub Date : 2021-05-04 DOI:10.3846/TRANSPORT.2021.14676

Li Li, Dong Zhang, Xiaoyun Cheng, Ke Wang, Guiping Wang

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Abstract

This study analysed unbalanced traffic distribution on Triple Left-Turn Lanes (TLTLs) at signalized intersections that is caused by left-turn drivers’ unequal lane preferences. To develop statistical bonding between the multilane traffic flow and individual lane choices, the lane volumes are formatted as compositional data to subject the sum-constant constraint. One-way and two-way Compositional ANalysis Of VAriance (CANOVA) models were formulated respectively to estimate the independent effect of one factor and its joint effects with other factors on the multilane traffic distribution. TLTL volume composition was the dependent variable of the models, while the factors of geometric design and traffic control that could affect left-turn drivers’ lane choice were the independent variables. Results indicate that variance of vehicle turning curve, length of the upstream segment, the location of triple left-turn sign, signal phase / cycle length, could affect the traffic distribution, and its balance could be achieved at specific levels of a factor. The joint effects of some factor couples could improve the unbalanced traffic distribution while others could not work.

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个体视角下三元左转车道交通分布评价的组合方法

本研究分析了信号交叉口左转弯三车道(tltl)上由于驾驶员的车道偏好不平等而导致的交通分布不平衡。为了在多车道交通流和单个车道选择之间建立统计联系，将车道量格式化为组合数据，以服从和常数约束。分别建立了单因素和双因素方差分析(CANOVA)模型，以估计一个因素对多车道交通分布的独立影响及其与其他因素的联合影响。车体构成是模型的因变量，影响左转弯驾驶员车道选择的几何设计和交通控制因素是模型的自变量。结果表明，车辆转弯曲线、上游路段长度、三次左转标志位置、信号相位/周期长度等因素的变化会影响交通分布，并在一定程度上达到平衡。一些因素对的共同作用可以改善交通分配的不平衡，而另一些则不起作用。

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来源期刊

Transport Engineering-Mechanical Engineering

CiteScore

3.40

自引率

5.90%

发文量

审稿时长

4 months

期刊介绍： At present, transport is one of the key branches playing a crucial role in the development of economy. Reliable and properly organized transport services are required for a professional performance of industry, construction and agriculture. The public mood and efficiency of work also largely depend on the valuable functions of a carefully chosen transport system. A steady increase in transportation is accompanied by growing demands for a higher quality of transport services and optimum efficiency of transport performance. Currently, joint efforts taken by the transport experts and governing institutions of the country are required to develop and enhance the performance of the national transport system conducting theoretical and empirical research. TRANSPORT is an international peer-reviewed journal covering main aspects of transport and providing a source of information for the engineer and the applied scientist. The journal TRANSPORT publishes articles in the fields of: transport policy; fundamentals of the transport system; technology for carrying passengers and freight using road, railway, inland waterways, sea and air transport; technology for multimodal transportation and logistics; loading technology; roads, railways; airports, ports, transport terminals; traffic safety and environment protection; design, manufacture and exploitation of motor vehicles; pipeline transport; transport energetics; fuels, lubricants and maintenance materials; teamwork of customs and transport; transport information technologies; transport economics and management; transport standards; transport educology and history, etc.