A CB radio/trucker term used to describe a member of the local law enforcement. This phrase usually refers to the county sheriff structure in the United States.
Trucker term used to describe local (usually rural) law enforcement, such as a sheriff or deputy, that is not part of a statewide highway patrol law enforcement unit.
Trucker 1: Hey there Eastboud, what'd'ya leave behind ya?
Trucker 2: Westbound, you got a county mountie takin' pictures at about the 112 yard stick.
Trucker 1: Ten-four driver, you're clear all the way to K-town.