Florida State Highway System
The State Highway System of the U.S. state of Florida comprises the roads maintained by the Florida Department of Transportation (FDOT) or a toll authority. The components are referred to officially as state roads, abbreviated as SR. == History == Prior to the 1945 renumbering, State Roads were given numbers in the order they were added to the system.
Source: Wikipedia — Florida State Highway System (CC BY-SA 4.0)