Citation

Xu T, Liu J, Dai S. Adv. Mech. Eng. 2015; 7(1): 140512.

Copyright

(Copyright © 2015, Hindawi Publishing)

DOI

10.1155/2014/140512

PMID

unavailable

Abstract

This papermainly studies how to divide the passing stages of the pedestrians and bicycles conglomeration at signalized intersection in Chinese urban area. The conception of pedestrians and bicycles conglomeration is defined after analyzing the two-stage characteristics of pedestrians and bicycles groups. Seven intersections were chosen in Beijing as examples. After video analysis, the real-time displacement and the real-time velocities of seven intersections in one signal cycle are extracted. It is found that the procedure of pedestrians and bicycles passing the intersection can be divided into two stages, which shows distinct characteristics. Video records taken from the observational survey are used to extract the real displacement of pedestrians and bicycles and the passing behaviors images. A new approach is presented to calculate the occupation ratio of the pedestrians and bicycles conglomeration, based on the "suppositional grids" division of the effective crosswalks. Finally, the grey relational analysis is applied to divide the mixed groups' passing stages based on the occupation ratio of conglomeration. A signalized intersection in Beijing is presented as a case study, and the passing stages are clustered into four stages from initial five stages and the results indicate that the trend of change in different stages is obvious.

Language: en