01337243

Component

https://doi.org/10.3141/2234-13

http://scholar.google.com...hang&publication_year=2011

In the design of evacuation plans for major metropolises, one ought to recognize that a potentially large number of evacuees either depend on transit or other modes or need to walk over a long distance to reach their cars. In the process of approaching some designated pickup points or intermediate destinations, the massive number of pedestrians may present a tremendous burden to vehicles in the roadway network. Hence, development of a simulation tool capable of replicating realistic traffic conditions by both the pedestrian and the vehicle flows in the chaotic situation is imperative. Such a simulation tool should account for interactions or conflicts between pedestrians, between vehicles, and between pedestrians and vehicles. Despite the increasing use of traffic simulation as the primary analysis tool, effective software to simulate the mixed vehicle–pedestrian flows in congested environments remains in its infancy. This study attempts to address this need with the mixed cellular automata method. The proposed simulation model has integrated the strengths of the cellular automata method with some probabilistic functions, and offers a realistic mechanism to reflect the competing and conflicting interactions between vehicle and pedestrian flows. Although the model development remains in a preliminary stage, the experimental results indicate that failure to account for the impact of mixed-flow interactions in a congested traffic system could result in significant underestimates of the resulting delay, travel time, and system throughput.

01362330

11-3546

English

pp 116-124

2011

Transportation Research Record: Journal of the Transportation Research Board

9780309167529

Print

Figures (9) ; References (26) ; Tables (2)

Cellular automata; Evacuation; Metropolitan areas; Pedestrian flow; Pedestrian traffic; Pedestrian vehicle interface; Traffic conflicts; Traffic congestion; Traffic flow; Traffic simulation

Highways; Pedestrians and Bicyclists; Planning and Forecasting; Security and Emergencies; I72: Traffic and Transport Planning

TRIS, TRB, ATRI

Feb 17 2011 6:33PM

• Consequence of Turning Movements in Pedestrian Crowds During Emergency Egress
• Defending Transportation Networks Against Random and Targeted Attacks
• Dynamic Gravity Model for Hurricane Evacuation Planning
• Improving Resilience of Critical Infrastructure Systems Postdisaster: Recovery and Mitigation
• Influence of Departure Time Spans and Corresponding Network Performance on Evacuation Time
• Intersection Origin–Destination Flow Optimization Problem for Evacuation Network Design
• Material Convergence and Its Determinants: Case of Hurricane Katrina
• Model for Location of Medical Facility and Evaluation of Vulnerability and Accessibility of Road Network
• Relocating Children in Daytime No-Notice Evacuations: Methodology and Applications for Transport Systems of Personal Vehicles and Buses
• Resiliency of Transportation Network of Santo Domingo, Dominican Republic: Case Study
• Selection of Source and Use of Traffic Information in Emergency Situations
• Site Considerations for Points of Dispensing After Biological Terrorist Attack: Integrated Role of Transportation Planning and Medical Services
• Transportation and Emergency Management Tool Kit for Communications with Vulnerable Populations: Key Research Findings