1. (1) Counties or municipalities may adopt resolutions or ordinances prohibiting the operation of motor vehicles within their respective jurisdictions that produce noise in excess of the sound levels in decibels, measured on the A scale on a standard sound level meter having characteristics established by the American national standards institute, publication S1.4 - 1971, and measured at a distance of fifty feet from the center of the lane of travel and within the speed limits specified in this section:

   1. (a) Any motor vehicle with a manufacturer's

      1. (I) Before January 1, 1973 88 db(A) 90 db(A)
      2. (II) On and after January 1, 1973 86 db(A) 90 db(A)

      gross vehicle weight rating of six thousand

      pounds or more, any combination of vehicles

      towed by such motor vehicle, and any

      motorcycle other than a low-power scooter:

   2. (b) (Deleted by amendment, L. 2008, p. 2102, § 3, effective July 1, 2010.)

   Speed limit

   of more

   Speed limit than 35 mph

   of 35 mph but less

   or less than 55 mph

2. (2) The governing board shall adopt resolutions establishing any test procedures deemed necessary.
3. (3) This section applies to the total noise from a vehicle or combination of vehicles.
4. (4) For the purpose of this section, a truck, truck tractor, or bus that is not equipped with an identification plate or marking bearing the manufacturer's name and manufacturer's gross vehicle weight rating shall be considered as having a manufacturer's gross vehicle weight rating of six thousand pounds or more if the unladen weight is more than five thousand pounds.

Source: L. 71: p. 651, § 1. C.R.S. 1963: § 66-35-7. L. 73: p. 1406, § 48. L. 2008: IP(1) and (1)(b) amended, p. 2102, § 3, effective July 1, 2010. L. 2009: IP(1)(a) amended, (HB 09-1026), ch. 281, p. 1259, § 21, effective October 1.