Sec. 18-31. - Violation.

(a)

It shall be unlawful for any person to operate any motor vehicle, motorcycle, motor bike, motor scooter or similar vehicle on any real property in the unincorporated area of the County of Sonoma, other than public roads or property otherwise approved for recreation use of this type pursuant to chapter 26.

(b)

It shall be unlawful for any person to operate a motor vehicle motorcycle, motor bike, motor scooter or similar vehicle on any real property in the unincorporated area of the County of Sonoma, other than public roads, unless such vehicle is at all times equipped with an adequate muffler in constant operation and properly maintained to prevent any excessive or unusual noise, and no muffler or exhaust system shall be equipped with a cutout, bypass or similar device; or shall any person modify the exhaust system of such motor vehicle in any manner which will amplify or increase the noise emitted by the motor of such vehicle, above that emitted by the muffler originally installed on the vehicle nor shall any such motor vehicle be operated in a manner resulting in the escape of excessive smoke, flame, gas, oil, or fuel residue nor shall such motor vehicle be so operated unless the exhaust system, including the manifold, muffler and exhaust pipes shall be so constructed as to be capable of being maintained and shall be maintained in a reasonably gas-tight condition; nor shall such motor vehicle be driven or moved if the filling spout for any tank is closed or partly closed with a plug of wood, rags, or other combustible material.