A snowmobile shall be equipped with brakes, which are capable of stopping the snowmobile not more than 40 feet from an initial steady speed of 20 miles per hour and which locks the snowmobile traction belt or belts, while the snowmobile travels on packed snow and carries an operator who weighs 175 pounds or more. A snowmobile shall be equipped with one head light and one tail light, and the lights shall be illuminated when the snowmobile is operated between one-half hour before sunset and one-half hour after sunrise. A snowmobile shall be equipped with a muffler in good, working order and in constant operation from which noise emission at 50 feet at right angles from the vehicle path under full throttle does not exceed 86 DBA, decibels on the A scale, on a sound meter having characteristics defined by the American standards association S1, 4-1966, "general purpose sound meter." All snowmobiles manufactured after February 1, 1972, and operated in this governmental unit shall not exceed 82 DBA of the 1970 society of automotive engineers code J-192a. A snowmobile manufactured after July 1, 1977, and sold or offered for sale in this state shall not exceed 78 decibels of sound pressure at 30 feet as measured under the 1974 society of automotive engineers code j-192a, this subdivision does not apply to a snowmobile which is being used in an organized race on a course which is used for racing. (Ord. No. 152, § 4, 1-20-2009)