Citation

Nuo Z, Jia B, Shao CF, Gao ZY, Li XG. J. Transp. Saf. Secur. 2012; 4(3): 258-276.

Copyright

(Copyright © 2012, Southeastern Transportation Center, and Beijing Jiaotong University, Publisher Informa - Taylor and Francis Group)

DOI

10.1080/19439962.2012.681015

PMID

unavailable

Abstract

A dynamic parameters model is established based on cellular automata (CA) to simulate pedestrian evacuation in this article. The dynamic parameters are formulated to simplify tactically the decision-making process of pedestrians, which can reflect the pedestrian judgment on the surrounding conditions and determine the pedestrian's choice of action. The pedestrian moving rules are proposed according to two-dimensional cellular automaton Moore neighborhood. The simulation results of this model are compared and analyzed with previous model. It is clear that our model corresponds with the actual and shows the advanced nature. The evacuation time versus pedestrian density and exit width are studied. There is a linear relationship between evacuation time and pedestrian density, whereas there is a nonlinearly relationship (negative exponential) between evacuation time and exit width. Moreover, the authors consider the effects of the crowd distribution in evacuation process, and the optimal exit layout is given in a determined system, such as the optimal position and width of exits, providing safety guiding for the pedestrian in enclosed environments, and avoiding and/or reducing the number injuries.