Amending Chapter 20 Entitled Motor Vehicle Noise Control

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4. MODIFIED AND DEFECTIVE EXHAUST SYSTEMS; An exhaust system in which the original noise abatement devices have been physically altered causing them to be less effective in reducing noise as their original devices, or devices have been added to the original noise abatement devices such that noise levels are increased. 5. NOISE LEVEL: The A- Weighted sound level produced by motor vehicles. 6. PERSON: Any individual, association, partnership or corporation which includes any officer, employee, department, agency or instrumentality. 7. SOUND LEVEL METER: An instrument which includes a microphone, amplifier, RMS detector, integrator or time averager, output meter, and weighting networks used to measure sound pressure levels. Such instument shall be used for measurement of the intensity of sound and calibrated in decibels as standardised by the American Nationdl Standards, Institute (ANSI). Readings shall be made on a db (A) scale. 8. TRAFFIC NOISE: Sound made by a motor vehicle operated either on the public right -of -way or private property. All definitions and terminology used in this code not defined above, shall be defined in conformance with, and applicable publication of the American National Standards Institute (ANSI), or its successor body. Sec. 20 -122 Noise Limit It shall be unlawful for any person to cause noise levels from the operation or use of lightmotor vehicles in excess of 80 dB (A) in any area within the corporatelimits of the City of South Bend, Indiana, at any time. Such noise level limit shall be measured on a distance of not less than fifteen (15) feet from the noise source. Sec. 20 -123 Excessive Noise It shall be unlawful for any person to operate, cause to operate or use a light -motor vehicle such as to cause excessive noise levels as a result of a defective or modified exhaust system, or as a result of unnecessary rapid accelaeration, deceleration, revving or tire squeal, or as the result of the operation of radio devices such as but not limited to radios,phonographs, horns, and tape players on or from such vehicle. Sec. 20 -124 Exemptions The following are exempted from the provisions of this article: (1) Sound emitted from sirens of authorized emergency vehicles; (2) Burglar alarms on light motor vehicles of the electronic signaling type which transmit an audible signal to a receiver which can be carried by the owner or operator of the vehicle; and -2-