Heavy-Duty Idle Reduction Requirement

Heavy-duty vehicles with a gross vehicle weight rating greater than 8,500 pounds may not idle for more than five consecutive minutes when the vehicle is not in motion. Exceptions apply, including when idling is necessary due to traffic conditions; to maintain temperatures (under regulation) for passenger comfort; to provide auxiliary power or for maintenance purposes; to recharge batteries in hybrid electric vehicles; for electric vehicles; and for emergency service vehicles.

(Reference New York State Department of Environmental Conservation Regulations Chapter III, Subpart 217-3)