Trenton, NJ Environmental Rules: Vehicle Idling Restrictions (2026)

City Code § 167-2(J), listed under "Miscellaneous night noises," declares it a loud and unnecessary noise violation when, occurring in close proximity to residences between 11:00 p.m. and 7:00 a.m., a person warms up or idles buses, trucks or tractors, or engages in unnecessary and repeated idling, acceleration and deceleration, or starting and stopping, of automobiles and motorcycles. The provision is framed as a noise-control measure rather than a standalone air-quality idling law: it is triggered by the residential proximity and nighttime window rather than by a flat time limit that applies at all hours or citywide. Because it sits inside Chapter 167 (Noise) rather than a dedicated environmental or truck-idling chapter, Trenton does not have a separate daytime idling cap in this code; the restriction is specifically a night-noise rule protecting residents' sleep. Enforcement runs through the Trenton Police Department under the same general noise-nuisance framework covering horns, exhausts and landscaping equipment in the rest of § 167-2.