Recreational vehicles may be stored in the Agricultural, Agricultural-Residential and Residential zoning districts, subject to the following conditions:
(a) No such recreational vehicle, as defined herein and while parked or stored on the zoning lot, shall have fixed (permanent) connections to electricity, water, gas, or sanitary sewer facilities. While on the zoning lot, such recreational vehicle may be used for living or housekeeping purposes for a maximum of seventy-two (72) hours at a time but not more than a total of twenty-one (21) days in any calendar year.
(b) Recreational vehicles parked or stored outside of a garage shall be parked or stored to the rear of the front yard. Front yard parking and storage shall be permitted only if space in the side or rear yard, or access to, is not available and only on the vehicular access driveway or other hard surface parking area. Recreational vehicles parked or stored in the side or rear yard shall be on a hard surface.
(c) Notwithstanding the provisions of sub-section (b) above, recreational vehicles may be parked anywhere on the zoning lot for loading, unloading or maintenance purposes, for a period of not more than seventy-two (72) hours.
(d) Unless parked or stored in a garage, all such recreational vehicles shall be maintained in good repair, in working condition, and shall carry a current year's license or registration.