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It shall be unlawful for any person to operate a motor vehicle, or for the owner of a motor vehicle to permit the operation of any motor vehicle or combination of motor vehicles, at any time or place when such operation exceeds the following maximum permissible noise levels for the category of motor vehicle and for the designated time period specified in the table set forth below. The standards set forth in the table shall apply to all noise emitted from motor vehicles, including any equipment thereon, under any conditions of acceleration, deceleration, idle, greater load, and whether or not in motion, and shall include, but shall not be limited to, noise caused by the use of an "engine brake" which converts a power producing diesel engine into a power absorbing air compressor, resulting in a net energy loss (commonly referred to by brand names as "jacobs brake", "jake brake" or "dynatard brake"). Maximum permissible noise levels for motor vehicles shall be as follows:

MAXIMUM PERMISSIBLE NOISE LEVELS; MOTOR VEHICLES

Type Of Vehicle

Time Period

Maximum Allowable Noise Levels

Measurement Distance From Vehicle

Vehicles weighing less than 10,000 pounds, manufacturer's gross vehicle weight

Any time

80 decibels

At least 25 feet

Vehicles weighing 10,000 pounds or more, manufacturer's gross vehicle weight

Any time

90 decibels

At least 25 feet

(Ord. 15, Series 2001)