Most Illinois drivers likely know you need to pull over when a police officer initiates a traffic stop, but what if the car is unmarked? Regulations on unmarked law enforcement vehicles vary by state.

AUSTIN (KXAN) — Residents in a small Central Austin neighborhood had an unexpected Monday morning when the sound of cars racing down the street followed by a crash caught the attention of the ...

SALT LAKE CITY – A Utah Senate committee took aim at police quotas and unmarked cop cars by approving two proposals on Friday that could change how some officers do their jobs. SB262, sponsored by Sen ...

CHICAGO (WLS) -- Three juveniles traveling in a Jeep Cherokee are in custody after their SUV rear-ended an unmarked police car, and then nine parked vehicles at a South Chicago dealership, police said ...