N.Y.C. Admin. Code § 14-118.2: § 14-118.2 Traffic and parking enforcement by employees not police officers.

a. Notwithstanding any other provision of law, the commissioner may employ persons who shall not be police officers to engage in the performance of duties involving the enforcement of laws and regulations relating to (1) the parking of vehicles and (2) the regulating, directing, controlling and restricting of the movement of vehicular and pedestrian traffic, both such duties in furtherance of the facilitation of traffic, the convenience of the public and the proper protection of human life and health.

b. Nothing contained herein shall be construed to entitle such employees to the privileges and benefits of police officers, or to become members of the police pension fund.