. "4 Evidence from the 38 Largest Urbanized Areas." The Role of Transit in Emergency Evacuation: Special Report 294. Washington, DC: The National Academies Press, 2008.
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The Role of Transit in Emergency Evacuation
BOX 4-1
Indicators by Category of Interest for Statistical Profileof 38 Urbanized Areas
Size of Urbanized Area
Population
Land area (in square miles)
Transit service area of largest provider (in square miles)
Transit population served of largest provider
Potential Demand for Transit Service
Carless households
Housing units without cars
Percent of housing units without cars
Seniors
Householders living alone and ≥65 years of age
Percent of householders living alone and ≥65 years of age
Recent immigrants
Number of foreign born, entry ≥2000
Population ≥5 years of age who speak English less than “very well”
Percent of population ≥5 years of age who speak English less than “very well”
Poor (below the poverty line)
Population living below the poverty line
Percent of population living below the poverty line
Persons with disabilities
Population ≥5 years of age with a disability
Percent of population ≥5 years of age with a disability
Commuters
Number of workers ≥16 years of age using transit (excluding taxi)
Supply
Density of urbanized area (population per square mile)
Number of cars
Number of buses (for transit agencies with ≥100 vehicles operated in maximum service)
Number of railcars (for transit agencies with ≥100 vehicles operated in maximum service)
Number of demand response vehicles (for transit agencies with ≥100 vehicles operated in maximum service)
