Section 4. the Suburban Metropolitan Planning Commission Shall Make,

or cause to be made, and laid before the respective governmental authorities of the district, and, in its discretion, caused to be published, a map or maps of the entire district, or any portion or portions thereof, showing any or all systems of transportation, highways and roads, parks, parkways, water-supply, sewerage and sewage disposal, collection and disposal of garbage, housing, sanitation, playgrounds and civic centers, or of other natural physical features of the district; and it shall prepare plans for any new or enlarged facilities for intercommunication, parks, parkways, water-supply systems, sewers, sewage disposal, garbage disposal, land plottings and housing arrangements, playgrounds and civic centers, or any other public improvement that will affect the character of the district as a whole, or more than one political unit within the district, or any widening, extension, or relocation of the same, or any change in the existing township or borough or city plans, by it deemed advisable. And it shall make recommendations to the respective governmental authorities, from time to time, concerning any such matters or things aforesaid, for action by the respective legislative, administrative, or governmental bodies thereon; and in so doing have regard for the present conditions and future needs and growth of the district, and the distribution and relative location of all the principal and other streets, and railways, waterways, and all other means of public travel and business communications, as well as the distribution and relative location of all public buildings, public grounds, and open spaces devoted to public use, and the planning, subdivision and laying out for urban uses of private grounds brought into the market from time to time.