Road Capacity Driven Land Use Model (CADLUM)

In this paper we examine the major effects of road network attributes in a metropolitan area on the spatial distribution and intensity of activities, and suggest a model to describe these effects. The model is based on the hypothesis that the transportation system affects land development primarily as a constraint: the intensity of land use in an area cannot exceed the capacity of the road network that serves the traffic it generates.

With the model we examine the feasibility of a proposed land-use plan (or prediction) for an urban area, given a proposed transportation plan. If road-capacity constraints are violated, the model employs an optimization procedure to identify a feasible spatial distribution of the activities. In this paper we describe the conceptual basis for the model and its formulation as a distance-minimizing optimization problem, a heuristic solution method, and a simple application.