Usually unassuming cars on Missouri highways are just that: unassuming. But sometimes they turn on sirens and flashing lights ...

The reflective, color-matched markings are difficult to see during the day, giving them an almost invisible presence. The ...

One of the 20 new "ghost graphic" vehicles added to the Missouri State Highway Patrol fleet. Courtesy of Rachel Hays/Missouri ...

The SC Department of Public Safety has a specialized unit to combat aggressive driving including speeding and road rage.

State Transport Police also have unmarked vehicles. The Highway Patrol offers these tips about what to do if you are wary about being over by an officer in an unmarked car: Call *HP to verify it ...