SEPT 29, 2020 UPDATE  

National map of communities with limited evacuation routes

Fire Map Key

Map Key:

Light pink areas indicate current fire boundaries; Dark pink areas indicate U.S. Census boundaries of towns with limited evacuation routes located within 10 miles or less of a fire

Yellow areas indicate U.S. Census boundaries of towns with limited evacuation routes further than 10 miles from a fire boundary

About the map:

Our data science team analyzed the approx. 30,000 towns in the U.S. with populations under 40,000 based on U.S. Census, scoring them using a ratio of the number of roadway “exits” from each town and the average “load” on the most-used exits, weighted by town population. We then selected a subset of approx. 800 communities that scored at least 3 times the average of all towns analyzed. You can download the list, which includes the following detail for the first 100 communities on this list:

— POPULATION, based on U.S. Census
— EXITS, i.e. the number of usable vehicle exits incl. paved and dirt roads
— MAIN EXIT LOAD, i.e. the % of daily traffic using the main exit route

Get access to empirical traffic data for emergency response planning

Talk to us about evaluating options for your community's emergency services or evacuation planning.