Sec. 9-3.513.   Motor vehicles.
   The following acts and conduct pertaining to the use of motor vehicles are prohibited:
   (a)   The operation of any automobile or other motor vehicle upon any road, path, or trail within any park except those paved roads, trails, or other areas designated for the use of such vehicles by the Director;
   (b)   The operation of any motor vehicle within  a park, except an authorized emergency vehicle, at a rate of speed exceeding fifteen (15) miles per hour;
   (c)   The operation of any motor vehicle within any park unless such vehicle is currently licensed by the motor vehicle licensing authority of this or another State;
   (d)   Parking or leaving standing any automobile or other motor vehicle in any area other than those areas designated and posted as parking areas;
   (e)   Washing or repairing any motor vehicle within any park except in an emergency situation; and
   (f)   The operation or maintenance of a motor vehicle in any manner which causes excessive noise, dust, or threat to the public peace, health, and safety. (§ 1, Ord. 732, eff. October 8, 1975)