New Jersey Statutes Title 39. Motor Vehicles and Traffic Regulation 39 § 4-71

No person shall drive or back a horse or vehicle across, or allow the same to stand on a sidewalk unless it be in crossing the sidewalk to go into a yard or lot, and then not without the consent of the owner of the premises. This section shall not prohibit the passing of a horse or vehicle over a sidewalk in front of an alley or passageway with the owner's consent, or any municipality from driving or operating or causing to be driven or operated along or over the sidewalks within the municipality any vehicle for the purpose of maintaining or cleaning said sidewalks.