It shall be the duty of the planning commission to make a master plan of the city
and to perfect it from time to time. Such master plan may show, among other things:
existing and proposed streets, highways, expressways, bridges, tunnels, viaducts,
and approaches thereto; routes of railroads and transit lines; terminals, ports and
airports; parks, playgrounds, forests, reservations, and other public open spaces;
sites for public buildings and structures; districts for residence, business, industry,
recreation, agriculture, forestry; special districts for other purposes; limited development
districts for purposes of conservation, water supply, sanitation, drainage, protection
against floods, and the like; areas for housing developments, slum clearance, and
urban renewal and redevelopment; the location of public utilities whether publicly
or privately owned, including but not limited to sewerage and water supply systems;
zoning districts, and other planning features; together with time and priority schedules
and cost estimates for the accomplishment of the proposals. The master plan shall
be based upon and include appropriate studies of the location and extent of present
and anticipated population, social and economic resources and problems, and other
useful data. Such plan may be adopted, added to, and changed from time to time, by
a majority vote of the planning commission. It shall be a public record, but its purpose
and effect shall be solely to aid the planning commission in the performance of its
duties.
