AGN Media On Thursday, members from the Texas Department of Public Safety Troopers, Amarillo Police Department Motors Unit and Potter County Sheriff’s Office will be conducting a joint task force to enforce the Move Over/Slow Down law. According to a news release, the task force will take place on major roadways in Potter County. The release states that the law requires motorists to "move over or slow down when certain vehicles are stopped on the side of the road with emergency lights activated. These vehicles include police, fire, EMS, Texas Department of Transportation (TXDOT) vehicles and tow trucks."