Generally, it is safest to pull into a public area like a gas station or hospital parking lot while you call dispatch to verify if a police officer is making the traffic stop. Police officials who drive the unmarked vehicles said that they almost never pull people over.

Can an undercover police car pull you over?

An unmarked police car can stop vehicles but in order to comply with the provisions of the law, it must contain a constable who is in uniform. ... If a car flashing for you to pull over or stop is unmarked, unless you are certain it is the police, do not stop.

How can you tell if an undercover cop is over you?

Unmarked police vehicles can often be recognized by features like municipal plates, clusters of antennas, and dark tinted windows. When you're scrutinizing a could-be cop in person, look out for short, neatly-groomed military hairstyles, heavy-duty boots, or baggy clothing with lots of pockets.