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.

Add Yahoo as a preferred source to see more of our stories on Google. Road crews plow an eastbound lane of Interstate 30 in downtown Fort Worth on Sunday, Jan. 25, 2026. (Amanda ...

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 ...