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Title:

Comparative Analysis of the Effects of E-bikes and Bicycles on Safety of Signalized Intersections Using Traffic Conflicts Technique

Accession Number:

01473375

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

In this study, a comparative analysis was conducted to compare the risk-taking behaviors of the riders of e-bikes and bicycles and their effects on safety of signalized intersections. Data were collected at fourteen signalized intersections in the city of Kunming in China. It was found that 10.31% of the e-bikers have committed at least one of the identified risky behaviors as they were crossing intersections, which was 1.42 times as large as that of the bikers (7.28%). Traffic conflicts technique was used to estimate the safety effects of e-bikes and bicycles. The conflicts observed in the field were divided into sixteen types. The majority of the observed conflicts were caused by the risky behaviors of the drivers of automobiles. The predominant cause was that the drivers of automobiles did not yield to the right-of-way of e-bikes/bicycles, which accounted for 77.7% of the conflicts involving e-bikes and 76.1% of the conflicts involving bicycles. About 13.4% of the conflicts were caused by the risky behaviors of e-bikers, which was significantly higher than those caused by the bicycle riders (9.0%), but was significantly lower than those caused by the drivers of automobiles (77.6%). Red-light running was the leading cause for the conflicts in which the e-bikes were at-fault. The conflict rates associated with e-bikes and bicycles were compared. It was found that for all the conflict types the conflict rates for e-bikes were significantly higher than those for the bicycles. The conflict prediction model developed in this study showed that the presence of e-bikes significantly affected the total number of conflicts at a signalized intersection. The results of elasticity analysis showed that 1% increase in the proportion of e-bikes would increase the expected number of conflicts between automobiles and e-bikes/bicycles by 0.11%.

Supplemental Notes:

This paper was sponsored by TRB committee ANF20 Bicycle Transportation.

Monograph Accession #:

01470560

Report/Paper Numbers:

13-1605

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Bai, Lu
Liu, Pan
Chen, Yuguang
Zhang, Xin
Wang, Wei

Pagination:

21p

Publication Date:

2013

Conference:

Transportation Research Board 92nd Annual Meeting

Location: Washington DC, United States
Date: 2013-1-13 to 2013-1-17
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; References; Tables

Uncontrolled Terms:

Bicycle safety

Geographic Terms:

China

Subject Areas:

Pedestrians and Bicyclists; Safety and Human Factors; I83: Accidents and the Human Factor

Source Data:

Transportation Research Board Annual Meeting 2013 Paper #13-1605

Files:

TRIS, TRB, ATRI

Created Date:

Feb 5 2013 12:24PM