Montana Code Annotated 1999

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     61-9-418. Motorcycle noise suppression devices. All motorcycles or quadricycles operated on the streets and highways of this state shall be equipped at all times with noise suppression devices, including an exhaust muffler, in good working order and in constant operation. In addition, all motorcycles and quadricycles operating on streets and highways shall meet the following noise decibel limitations, on the standard A scale, such decibel limitations to be measured at 50 feet distant from the closest point to the motorcycle or quadricycle:
     
(1) any cycle manufactured prior to 197092 db(A)
(2) any cycle manufactured after 1969 but prior to 197388 db(A)
(3) any cycle manufactured after 1972 but prior to 197586 db(A)
(4) any cycle manufactured after 1974 but prior to 197880 db(A)
(5) any cycle manufactured after 1977 but prior to 198875 db(A)
(6) any cycle manufactured after 198770 db(A)

     History: En. Sec. 1, Ch. 398, L. 1973; amd. Sec. 1, Ch. 179, L. 1974; amd. Sec. 1, Ch. 273, L. 1974; amd. Sec. 1, Ch. 54, L. 1977; R.C.M. 1947, .1(2); amd. Sec. 46, Ch. 516, L. 1985.

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