Survival analysis on passing time of minor vehicle’s road crossing at un-signalized intersection in China

Abstract

This paper is to develop a quantitative approach of the operation performance of left turning by means of the passing time as the indicator to analyze the interactions of traffic stream between main and minor road based on survival analysis theory at the un-signalized intersection. The data were collected by video cameras in Nanjing, China. And the whole passing time (T) was divided two sections, namely passing time 1 (T1) in decision zone 1 and passing time 2 (T2) in decision zone 2, respectively. A hazard-based duration model was proposed to analyze the influential variables related to the passing time, including the variables H and W with the positive effect and Qw, Sw1, and L showing the negative effect on the passing time 1. The results also showed the variables revealing comprehensive characteristics are significantly negative related to the passing time 2, such as Qe, Se1, W, and C. Moreover, all variables from model estimation of T1 and T2 were selected into the model of whole passing time, but the variable of W has the opposite effect on passing hazard between the model of T1 and T. In addition, the various influential variables related should be given full consideration in the performance analysis of left turning. It is hoped that this paper will help to enhance the safety, planning, and management of policies and facilities to improve operation efficiency at un-signalized intersection.