There are a number of different road designations in the United States, from highways and freeways to interstates and routes, and it can cause some confusion with different laws and regulations.

The story of America’s interstates is usually told as a straightforward tale of postwar progress, but the real origins are ...

Praised as the biggest public works project in American history, the Interstate Highway System has been an essential link in connecting us to different communities and moving trillions of dollars ...

The interstate highway system transformed the U.S. economy and American life in the 20th century. High-speed rail can have a similar effect in the 21st century, reindustrializing and reconnecting ...

Ever wondered how the highway and interstate numbers came to be? What do they even mean if they mean anything at all? Behind those numbered shields displayed on the signs is a mathematical logic grid ...