For purposes of this subchapter the following definitions shall apply unless the context clearly indicates or requires a different meaning:
   EMERGENCY VEHICLE. A motor vehicle used to respond to a public calamity or to protect persons or property from imminent danger.
   EMERGENCY WORK. Work made necessary to restore property to a safe condition following a public calamity, work to restore public utilities, or work required to protect persons or property from an imminent exposure to danger.
   MOTOR VEHICLE. Any vehicle powered by a mechanical engine, and designed to be driven or used on any public or private property. Such definition shall include, but not be limited to: automobiles, vans, trucks, motorcycles, motor scooters, dune buggies, snowmobiles, all-terrain vehicles, go-carts, mini-bikes and trail bikes.
   MUFFLER. Any apparatus consisting of baffles, chambers or acoustical absorbing material whose primary purpose is to transmit liquid or gases while causing a reduction in sound emission at one end. To qualify, the apparatus must cause a reduction in sound pressure level upon insertion into the system for which it is intended.
   NOISE. Any sound which is unwanted or which causes or tends to cause an adverse psychological or physiological effect on human beings.
   NOISE DISTURBANCE. Any sound or vibration which annoys, disturbs, or perturbs reasonable persons with normal sensitivities, or any sound which injures or endangers the comfort, repose, health, hearing, peace, or safety of other persons.
   PERSON. Any individual, association, partnership or corporation which includes any officer, employee, department agency or instrumentality.
   PLAINLY AUDIBLE NOISE. Any noise, for which the information content of that noise is unambiguously communicated to the listener, such as, but not limited to, understandable spoken speech, comprehension of whether a voice is raised or normal, or comprehensive musical rhythms.
   POWERED MODEL VEHICLES. Any powered vehicles, either airborne, waterborne, or landborne, such as, but not limited to, model airplanes, boats, cars, or rockets, which can be propelled by mechanical means, and which are not designed to carry persons or property.
   PUBLIC RIGHT-OF-WAY AND PUBLIC SPACE. Any street, avenue, boulevard, highway, alley, park, or public space which is owned or controlled by a public governmental entity.
(Ord. 2000-6, passed 9-13-00)