Traffic evacuation time under nonhomogeneous conditions
| Autor: | Tom V. Mathew, Joseph Fazio, Rohan Shetkar |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Engineering
Automobile Driving Time Factors Correlation coefficient Occupancy Urban Population 0211 other engineering and technologies Poison control India 02 engineering and technology Urban area Model validation Transport engineering Disasters 0502 economics and business Humans Estimation 050210 logistics & transportation geography geography.geographical_feature_category business.industry 05 social sciences Public Health Environmental and Occupational Health Mode (statistics) 021107 urban & regional planning Traffic flow business Safety Research |
| Zdroj: | International journal of injury control and safety promotion. 24(2) |
| ISSN: | 1745-7319 |
| Popis: | During many manmade and natural crises such as terrorist threats, floods, hazardous chemical and gas leaks, emergency personnel need to estimate the time in which people can evacuate from the affected urban area. Knowing an estimated evacuation time for a given crisis, emergency personnel can plan and prepare accordingly with the understanding that the actual evacuation time will take longer. Given the urban area to be evacuated, street widths exiting the area's perimeter, the area's population density, average vehicle occupancy, transport mode share and crawl speed, an estimation of traffic evacuation time can be derived. Peak-hour traffic data collected at three, midblock, Mumbai sites of varying geometric features and traffic composition were used in calibrating a model that estimates peak-hour traffic flow rates. Model validation revealed a correlation coefficient of +0.98 between observed and predicted peak-hour flow rates. A methodology is developed that estimates traffic evacuation time using the model. |
| Databáze: | OpenAIRE |
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