From Longman Dictionary of Contemporary Englishpatrol carpaˈtrol car noun [countable] SCPTTCa police car that drives around the streets of a city
Examples from the Corpus
patrol car• There will already be a couple of chaps in a patrol car down a side street as a matter of course.• The assault on Watson and the theft of his patrol car are two separate crimes, he contended, requiring separate sentences.• Instead they took the kids away in the patrol car and told me to wait.• The patrol car arrives again and parks across the road from us. 