Author Topic: SEMA News - EXHAUSTING THE POSSIBILITIES: MONTANA POISED TO ENACT 95-DB LI  (Read 11376 times)

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SEMA eNews, Vol. 10, No. 17 April 25, 2007

EXHAUSTING THE POSSIBILITIES: MONTANA POISED TO ENACT 95-DECIBEL LIMIT

SEMA-sponsored legislation to permit vehicles with modified exhaust systems that do not emit in excess of 95 decibels as measured by SAE test standard J1169 was approved by the Montana State Legislature and sent to the governor for his signature. Under the SAE standard, a sound meter is placed 20 inches from the exhaust outlet at a 45-degree angle, and the engine is revved to three- quarters of maximum-rated horsepower. The highest decibel reading is then recorded. SEMA has also helped to enact an objectively measured 95-decibel limit in California, Washington and Maine. For details, contact Steve McDonald at stevem@sema.org.