Police vehicles are an important part of law enforcement. They come in a variety of shapes and sizes, including the VAN (3 letters), prowlcar (8 letters), radiocar (8 letters), squadcar (8 letters), and blackmaria (10 letters). Vans are typically used for transporting personnel or equipment, while prowlcars, radiocars, and squadcars are all patrol cars. The blackmaria is a type of VAN used to transport prisoners.