Feasibility analysis of phase transition signals based on e-bike rider behavior

Author:

Dong Sheng1,Zhou Jibiao1,Zhao Li2,Tang Keshuang3,Yang Renfa1

Affiliation:

1. School of Transportation, Ningbo University of Technology, Ningbo, China

2. Nebraska Transportation Center, University of Nebraska – Lincoln, Lincoln, NE, USA

3. Department of Traffic Engineering, Tongji University, Shanghai, China

Abstract

This article evaluates the feasibility of two scenarios of phase transition signals, that is, the flashing green together with red–yellow light and the green countdown together with red countdown, at signalized intersections in terms of e-bike rider behavior. An evaluation framework is first proposed. During the phase transition, the stop-go and start-up behavioral parameters are collected at four intersections in Shanghai, China. Sensitivity analysis is then performed to identify the most significant factors that influence the occurrence of traffic conflicts during the phase transition. Based on the above analysis results, case studies were finally done to look into safety performance of the two scenarios of phase transition signals, indicated by the distributions of post encroachment time at the conflict point and the occurring probability of extremely small post encroachment times. Research result shows the transition signal combination of green countdown + red countdown tends to cause traffic accidents more easily and thus less safe compared to the transition signal combination of flashing green + red-yellow. Unlike the conventional method generally based on the deterministic traffic flow theory, the proposed methodology has a wide application. With the aid of it, traffic engineers are capable of designing transition signals in a more scientific manner.

Publisher

SAGE Publications

Subject

Mechanical Engineering

Reference17 articles.

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