Idle Reduction Weight Exemption

Any motor vehicle equipped with qualified idle reduction technology may exceed the state gross, axle, tandem, or bridge weight limits by up to 400 pounds to account for the weight of the technology. The idle reduction technology must be able to provide electrical service, heating, or cooling to the vehicle. The additional weight may not exceed the actual weight of the idle reduction unit. The vehicle operator must also be able to prove the weight of the idle reduction technology and demonstrate that the technology is fully functional.

(Reference Massachusetts General Laws Chapter 90, Section 19A)