This guide is for general information only and is not legal advice. Laws change — verify current rules with your state DOT or a licensed attorney before relying on this for any legal matter. Read full disclaimer.
The rule
There is no statewide rule on sidewalk cycling — it is left to cities and counties in New Jersey. New Jersey Title 39 (Motor Vehicles and Traffic Regulation) does not address bicycles on sidewalks at the state level; the matter is left to municipalities under N.J. Stat. § 39:4-197. Newark, Jersey City, Hoboken, and Atlantic City each prohibit sidewalk riding by adults in their central business districts. Many smaller municipalities allow sidewalk riding citywide subject to a yield-to-pedestrians rule. Boardwalks have their own bike-hour ordinances along the Jersey Shore.
What this means in practice
Because New Jersey doesn't set a statewide rule, the answer is "it depends on the city." Central business districts, downtown cores, and school zones are the most commonly restricted areas. Always check the local municipal code before you ride on a sidewalk.