Every campground hereafter established shall be laid out with, and all existing campgrounds shall provide, available unoccupied space of not less than ten feet by thirty feet or three hundred square feet for each camp car and/or trailer and such available unoccupied space shall not be construed to mean the space directly under any portion of any camp car and/or trailer. Camp cars and/or trailers shall be arranged in rows abutting or facing on a driveway or clear unoccupied space of not less than ten feet in width, which space shall have unobstructed access to a public street or alley. (Ord. 605 § 14; March 9, 1937.)