(a) The Commission shall prepare a master plan of the District showing existing and proposed roads included in or likely to be incorporated in the road system, together with the indication of their existing and proposed widths; existing and proposed county parks, playgrounds, parkways, and other recreation places; existing and proposed county airways, aviation fields and other county open places; existing and proposed sites for county buildings; and such other features as may come wholly or partially within county jurisdiction; and in addition, similar elements of the plan existing and proposed within city or town as have or are likely to bear an important relation to the above county features. Such master plan shall be a public record, but its purpose and effect shall be solely as an aid to the Commission in the performance of its duties.
(b) The Commission may, from time to time, amend, extend or add to the master plan.
(c) The master plan may cover areas within the corporate limits of any city or town in Kent County, to the extent that such areas shall be deemed, in the judgment of the Commission, to be related to the planning of the District. The master plan shall have no legal effect in such areas except as in pursuance of a request for the inclusion of such area within the District as provided in § 4802 of this title.
(d) The Commission shall encourage the cooperation of the cities and towns within Kent County in any matter concerning the master plan and, if requested, shall advise the governing body or authority of any city or town in Kent County with respect thereto.