The following regulations apply to planned commercial developments:
(a) Planned unit development of related commercial establishments is encouraged by varying the setback and requirements. Open space gained through the varying of setback and area requirements is to be used for the development of open plazas, pedestrian malls, tot lots and other public spaces and uses with adequate arrangement, design and plantings.
(b) Commercial buildings and establishments shall be planned as groups having common parking areas and common ingress and egress points in order reduce the number of potential accident locations at intersections and thoroughfares. In planning these groups of buildings or establishments, no yard space shall be required between uses within the groups; however, appropriate yard space must be provided at the edge of the complete development. A side yard of thirty feet and a rear yard of forty feet shall be required if the project is to be located adjacent to any residential district or planned residential unit development. Planting screens or fences shall be provided on the sides of the development abutting areas occupied or likely to be occupied by residents.
(c) Off-street parking and loading areas shall be provided. Group parking facilities shall provide spaces equal to the number of spaces required for each use to be developed.
(d) The plan of the project shall provide for the integrated and harmonious design of buildings and for adequate and properly arranged facilities for internal traffic circulation, landscaping and such other features and facilities as may be necessary to make the project attractive and efficient from the standpoint of the adjoining and surrounding existing or potential developments.