New Jersey Statutes Title 39. Motor Vehicles and Traffic Regulation 39 § 3-54.11

a. The Chief Administrator of the New Jersey Motor Vehicle Commission shall prepare suitable identification cards bearing the signature of the chief administrator which, upon the request of the mayor or chief executive officer of any municipality recognizing and being served by a volunteer fire company or a volunteer first aid or rescue squad on a form and in a manner prescribed by the chief administrator, shall be forwarded to the mayor or chief executive officer, to be countersigned and issued by the mayor or chief executive officer to the members in good standing of the volunteer fire company or first aid or rescue squad.

b. Identification cards issued pursuant to this section and sections 5 and 6 of P.L.2005, c. 34 (C.39:3-54.22 and C.39:3-54.23) shall be considered permits to mount and operate emergency warning lights as provided for in P.L.1977, c. 223 (C.39:3-54.7 et seq.) and shall apply to any motor vehicle driven by the member of a volunteer fire company , a volunteer first aid or rescue squad or a volunteer Office of Emergency Management. Emergency warning lights shall not be mounted prior to the issuance of the identification cards. Each member of a volunteer fire company , a volunteer first aid or rescue squad or a volunteer Office of Emergency Management must carry the identification card while an emergency warning light or lights are operated on the vehicle.