Bill S.66 aims to regulate motor vehicle noise, exhaust modifications, and engine compression brakes in Vermont. It amends existing law to include provisions that prohibit the operation of vehicles with certain types of mufflers and exhaust systems that contribute to excessive noise. Specifically, it establishes that motor vehicles must be equipped with effective muffling devices and outlines inspection requirements for vehicles and motorcycles that do not meet these standards. Additionally, the bill introduces new regulations for engine compression brake devices, mandating that trucks equipped with such devices must also have a muffler to mitigate noise. Exceptions are made for emergency situations where the device is used to slow down or stop the vehicle.

The bill also mandates the Department of Motor Vehicles to adopt amendments to the inspection manual by July 1, 2026, and to conduct a public outreach campaign regarding the new regulations. Furthermore, it requires the Commissioner of Motor Vehicles to submit a report by December 15, 2025, proposing limits on motor vehicle noise and enforcement procedures, drawing comparisons with laws in other New England states. The effective dates for the various sections of the bill are staggered, with some provisions taking effect on July 1, 2025, and others on July 1, 2026.

Statutes affected:
As Introduced: 23-1221, 23-1223
As Passed By the Senate -- Official: 23-1221, 23-1223
As Passed By the Senate -- Unofficial: 23-1221