**** 69th Legislature 2025 SB 264.1 - 1 - Authorized Print Version β SB 264 1 SENATE BILL NO. 264 2 INTRODUCED BY R. TEMPEL 3 4 A BILL FOR AN ACT ENTITLED: βAN ACT ELIMINATING A DEFENSE TO THE EXHAUST NOISE 5 LIMITATION STATUTE; AND AMENDING SECTION 61-9-435, MCA.β 6 7 BE IT ENACTED BY THE LEGISLATURE OF THE STATE OF MONTANA: 8 9 Section 61-9-435, MCA, is amended to read: 10 "61-9-435. (1) Except as provided in subsection (3) (2), a person may not 11 operate a motor vehicle with an exhaust system that emits a noise in excess of 95 decibels, as measured by 12 the society of automotive engineers' standard j1169 (May 1998). 13 (2) A person charged with violating this section may not be convicted if the person had reasonable 14 grounds to believe that the vehicle was not operated in violation of the standard in subsection (1). 15 (3)(2) This section does not apply to a motorcycle or quadricycle that is subject to 61-9-418." 16 - END -