{"data":{"id":"us-mt/61-9-403","jurisdiction":"us-mt","citation":"61-9-403","heading":"Mufflers -- prevention of noise.","body":"(1) Every motor vehicle shall at all times be equipped with a muffler in good working order and in constant operation to prevent excessive or unusual noise and annoying smoke, and no person shall use a muffler cutout, bypass, or similar device upon a motor vehicle on a highway.\n(2) The engine and power mechanism of every motor vehicle shall be so equipped and adjusted as to prevent the escape of excessive fumes or smoke.","path":["TITLE 61. MOTOR VEHICLES","CHAPTER 9. VEHICLE EQUIPMENT","Part 4. Miscellaneous Regulations"],"source_url":"https://mca.legmt.gov/bills/mca/title_0610/chapter_0090/part_0040/section_0030/0610-0090-0040-0030.html","current_through":"Montana Code Annotated 2025","vintage":"","retrieved_at":"2026-09-14T04:57:59Z","sha256":"b071f3a904e7fdfb2ef50185b1e14d05be6c19f8ac50006cc769441b2fe1441f","source_id":"us-mt","stale":false,"prev":"us-mt/61-9-402","next":"us-mt/61-9-404"},"notice":"GroundRules: Original legal text. Not legal advice."}