N.J. Stat. Ann. § 39:3-54.13

7. Any person authorized to operate emergency warning lights pursuant to P.L.1977, c.223 (C.39:3-54.7 et seq.) who willfully operates such emergency warning lights in violation of the provisions of P.L.1977, c.223 (C.39:3-54.7 et seq.) shall be liable to a penalty of not more than $100 and the person's privilege to operate such emergency warning lights may be suspended or revoked by the Chief Administrator of the New Jersey Motor Vehicle Commission. A person who is not authorized to operate emergency warning lights who willfully operates such emergency warning lights shall be liable to a penalty of not more than $200.