Citation

Yang ZS, Gao XY, Sun D. J. Traffic Transp. Eng. (Xi'an, Shaanxi) 2011; 11(2): 114-120.

Copyright

(Copyright © 2011, Chang'an Daxue)

DOI

unavailable

PMID

unavailable

Abstract

The effects of vehicle delay on the emergency evacuation and rescue decision-making of all traffic flow conflicts within cities were analyzed. An intersection control parameter was introduced into the exciting simulation model of emergency evacuation and rescue, and the model was based on cell transmission model. A simulation model of emergency evacuation and rescue was built under intersection emergency control. In the improved model, the weighted travel time of emergency evacuation and rescue in planning horizon was minimized, and contraflow strategy was introduced. Simulation result shows that because giving way to high-priority traffic flows G3 and G4, the average travel times of low-priority traffic flows G1 and G2 increase by 10.0 s and 11.1 s respectively, which accords with the actual circumstance of urban emergency evacuation and rescue. After the implementation of contraflow strategy, the travel times of beneficial traffic flows G2 and G4 decrease by 6.5 s and 6.0 s respectively. So the model and contraflow strategy are feasible.