Police car

A police car is an emergency vehicle used by police for transportation during patrols and responses to calls for service. Police cars are used by police officers to patrol a beat, quickly reach incident scenes, and transport and temporarily detain suspects.

Police vehicles, like other emergency vehicles, usually bear livery markings to distinguish them as such. They generally use emergency lights (typically red, blue, or both) and sirens to warn other motorists of their presence, especially when responding to calls for service. Police cars typically contain communication devices, weaponry, and a variety of equipment for dealing with emergency situations. The vast majority of police cars are modified variants of civilian-market automobiles, though some are custom police-oriented models that are usually designed for special purposes.

The first police car was an electric wagon used by the Akron Police Department in Akron, Ohio, in 1899. The first operator of the police patrol wagon was Officer Louis Mueller, Sr. It could reach 16 mph (26 km/h) and travel 30 mi (48 km) before its battery needed to be recharged. The car was designed by city mechanical engineer Frank Loomis. The US$2,400 vehicle was equipped with electric lights, gongs, and a stretcher. The car's first assignment was to pick up a drunken man at the junction of Main and Exchange streets.

Ford introduced the flathead V8 in the 1932 Ford as the first mass-marketed V8 car; this low-priced, mass-marketed V8 car became popular with police in the United States, establishing strong brand loyalty that continued into the 21st century. Starting in the 1940s, major American automakers, namely the Big Three, began to manufacture specialized police cars. Over time, these became their own dedicated police fleet offerings, such as the Ford Police Interceptor and Chevrolet 9C1.

In the United Kingdom, Captain Athelstan Popkess, Chief Constable of the Nottingham City Police from 1930 to 1959, transformed British police from their Victorian era foot patrol beat model to the modern car-based reactive response model, through his development of the "Mechanised Division", which used two-way radio communication between police command and police cars. Under Popkess, the Nottingham City Police began to use police cars as an asset that police tactics centred around, such as overlaying police car patrol sectors over foot patrol beats and using police cars to pick up foot patrol officers while responding to crimes.

Increased car ownership in the post-World War II economic expansion led to police cars becoming significantly more common in most developed countries, as police jurisdictions expanded farther out into residential and suburban areas, car-oriented urban planning and highways dominated cities, vehicular crimes and police evasion in cars increased, and more equipment was issued to police officers, to the point that vehicles became practically necessary for modern law enforcement.

Various types of police cars exist. Depending on the organization of the law enforcement agency, the class of vehicle used as a police car, country, and the environmental factors of the agency's jurisdiction, many of the types below may or may not exist in certain fleets, or their capabilities may be merged to create all-rounded units with shared vehicles as opposed to specialized units with separate vehicles.

A patrol car is a police car used for standard patrol. Used to replace traditional foot patrols, the patrol car's primary function is to provide transportation for regular police duties, such as responding to calls, enforcing laws, or simply establishing a more visible police presence while on patrol. Driving a patrol car allows officers to reach their destinations more quickly and to cover more ground compared to other methods. Patrol cars are typically designed to be identifiable as police cars to the public and thus almost always have proper markings, roof-mounted emergency lights, and sirens.