The New York City Police Department Auxiliary Police is an unpaid, unarmed reserve police

Auxiliary police

Auxiliary police or special constables in England) are usually the part-time reserves of a regular police force. They may be armed or unarmed. They may be unpaid volunteers or paid members of the police service with which they are affiliated...

 force which is a subdivision of the Patrol Services Bureau of the New York City Police Department

New York City Police Department

The New York City Police Department , established in 1845, is currently the largest municipal police force in the United States, with primary responsibilities in law enforcement and investigation within the five boroughs of New York City...

. Auxiliary Police officers assist the NYPD with uniformed patrols and provide traffic and crowd control at vehicular accidents, fires, demonstrations and other major events. Over 4,500 Auxiliary Police officers contribute over one million hours of service each year.