Idle Reduction Weight Exemption

Any heavy-duty vehicle with a gross vehicle weight rating greater than 8,500 pounds equipped with a qualified auxiliary power unit (APU) may exceed the state’s gross vehicle and axle weight limits by up to 400 pounds. An APU is defined in Maine law as an integrated system that provides heat, air-conditioning, engine warming, or electricity and is certified by the EPA.

(Reference Maine Revised Statutes Title 29-A, Sections 101 and 2360)