Shane Hampton, a researcher at the University of Oklahoma, has compiled an amazing collection of before-and-after images showing how freeways transformed major American cities in the Midwest.

When Los Angeles's streetcar system shut down for good in the 1960s, the city was deprived of one of the more idiosyncratic pleasures of urban living: a truly iconic map. Clover interchanges and ...

See the stretches of seven Phoenix-area freeways that have the most fatal accidents, including I-10, I-17 and U.S. 60.

Already a hit on Kickstarter, a color-coded, subway-style road map is generating interest from people looking for an easier way to navigate the Greater Los Angeles freeway system.