This Tool Maps Transit, Block by Block, for 300 Cities

Buying a home? Locating a new business? AllTransit's data are voluminous and granular.

Here the tool maps Washington, DC, and its suburbs and shows how the cost of commuting changes from place to place. The average for people living within a half-mile of public transit is 10.1 percent of income.

Source: AllTransit database; Center for Neighborhood Technology

Surprise, Arizona, northwest of Phoenix, scores lowest among U.S. cities larger than 100,000 people in a ranking of transit systems, according to a new online tool launching Tuesday. The city of 124,000 pulled a 0.09 out of 10. If you don’t have a car, you’re walking.

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