The parking and loading space requirements of Section 1159.02 and 1159.08 shall not apply to the Downtown Redevelopment District as shown on the Official Zoning Map, provided that parking and loading facilities, if voluntarily established, shall comply with Section 1159.09 and the following:
   A.   Subject to limitations in Section 1159.14B., such space may occupy all or part of any required yard.
   B.   No such space shall be closer than fifty feet (50') from any other lot located in any R District, unless wholly within a completely enclosed building (provided that a business shall not be conducted in connection therewith) or unless enclosed on all sides by a wall or uniformly painted solid board fence not less than six feet (6') in height.