Cherry top (slang)
Encyclopedia
Cherry top is American slang which refers to a specific type of Police car
Police car
A police car is a ground vehicle used by police, to assist with their duties in patrolling and responding to incidents. Typical uses of a police car include transportation for officers to reach the scene of an incident quickly, to transport criminal suspects, or to patrol an area, while providing a...

 with only red rotating emergency vehicle lighting mounted to the roof. The term originated in the 1960s, which is when these red rotating "beacon" lights were common. http://books.google.com/books?id=5GpLcC4a5fAC&printsec=frontcover#PPA270,M1

Most modern Police cars have more elaborate lighting systems than the traditional rotating light(s) and they emit multiple colors; however, the term "cherry" or "cherries" is still sometimes used to refer to any emergency lighting on a Police car.

Example of usage: "I didn't realize how fast I was driving until I saw the cherries in my rear-view mirror."
The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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