I visited Texas last year and all of the major state roads are called Farm to Market XX or Ranch to Market XX, instead of Route or Highway XX. Has to do with the legislative bills that originally funded their construction.
In Maine, if you were not born there, you're "from away".
I wouldn't say Farm or Ranch Roads are "major" roads. Texas does have State Highways. Hundreds of them. State Highway 16 runs from San Antonio to Witchita Falls, for example, and passes through my town. State Highway 71 runs from Brady, in Central Texas, through Austin and down almost to the coast. The Farm and Ranch roads are generally shorter roads designed to help farmers and ranchers more easily move their product.
In larger cities, some of those Farm and Ranch roads are divided highways, but out in the sticks they are definitely inferior to state highways.