Determination of functional subregions within an urban area for transportation planning. Presented at the 53rd Annual Meeting of the Highway Research Board, Washington, January 1974

It is axiomatic that large urban areas are not spatially homogeneous with respect to transportation demand, supply and impact phenomena. This paper addresses this heterogeneity in terms of the transportation planning process. A technique for using areawide travel, land use, and population data to divide an urban area into a set of functional subregions is presented. Each subregion represents a planning area, and interregion planning is proposed on a different scale of analysis.