Loop 1 in Austin goes in a straight line. San Antonio’s Interstate 410 isn’t classified as a loop — even though it’s shaped like a loop and locals call it as such. And Nacogdoches Road on the city’s Northeast Side is also called FM 2252.
Home to the nation’s largest system of highways, Texas has some confusing names for its roads. Think “BS” for Business State Highway or “RM” for Ranch-to-Market roads.
Here’s a quick guide to a few definitions you should know, courtesy of the Texas Department of Transportation…