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Discrete Dynamics in Nature and Society
Volume 2014 (2014), Article ID 314207, 6 pages
http://dx.doi.org/10.1155/2014/314207
Research Article

Modeling and Application of Pedestrian Safety Conflict Index at Signalized Intersections

1School of Transportation Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650500, China
2College of Science and Engineering, University of Minnesota, Minneapolis, MN 55455, USA
3School of Transportation, Jilin University, Changchun, Jilin 130022, China

Received 26 January 2014; Revised 17 February 2014; Accepted 23 February 2014; Published 31 March 2014

Academic Editor: Wuhong Wang

Copyright © 2014 Wei Cheng et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Traffic conflict between turning vehicles and pedestrians is the leading cause of pedestrian fatalities at signalized intersections. In order to provide a solution for evaluating intersection safety for vulnerable road users, this paper first determines the most important factors in analyzing pedestrian-vehicle conflict and puts forward a pedestrian safety conflict index (SCI) model to establish a quantitative standard for safety evaluation of two- or multiphase intersections. A safety level system is then designed based on SCI to help categorize and describe the safety condition of intersections applicable to the model. Finally, the SCI model is applied to the evaluation of two intersections in the city of Changchun, the result of which complies with expectation, indicating the model’s potential in providing an improved approach for pedestrian-vehicle conflict evaluation study.