(a) When PUDs include commercial uses, commercial buildings and establishments shall be planned as groups having common parking areas and common ingress and egress points in order to reduce the number of potential accident locations at intersections with streets. Planting screens or fences shall be provided on the perimeter of the commercial areas abutting residential areas.
(b) The plan of the project shall provide for the integrated and harmonious design of building, 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 noncommercial areas.
(c) All areas designed for further expansion or not intended for immediate improvement or development shall be landscaped or otherwise maintained in a neat and orderly manner as specified by the Planning Commission.