.04 Noise Limits for Vehicles.

A person may not operate or permit to be driven on a highway of this State any motor vehicle or combination of vehicles at any time or at any speed, under any conditions of grade, load, acceleration, or deceleration in a manner which would exceed the sound level limits specified in Table 1, 2, or 3 for the category of vehicle. Measurements shall be made in accordance with the procedures and measuring device specifications adopted by the Administrator. Sound level limits are based on the use of the A-weighting network and fast Lmax meter response.