Have you seen.....Newark
NJSDMV Title 39 does not address law enforcement officers personal vehicles. Title: 39:3-54.0 to 39:3-54.13 & Title: 39:3-54.15 to 39:3-54.22 addresses the rules, regulations & requirements regarding the possession, use & permitting of emergency warning lights, sirens & operator identification of same under the umbrella of fire, ems & emergency management personnel only. VPD24193s avatar, signature & user ID does not in anyway imply that he is law enforcement, so cut him some slack. Another thing, I would strongly discourage anyone from approaching any "Newark" cop with any foolish questions or uninformed accusations about the law as you feel it should apply to them in regard to any emergency equipment in any vehicle they are in close proximity to or sitting in, because if you are lucky, you'll just get your feelings hurt, just leave it alone.
FLRAILMAN