An Iterative Model for Generating Transportation Networks*

The network replication problem may be stated as follows: Given a spatia distribution of vertices and their incident edges, isolate criteria which will result in the replication of the graph being examined.Aside from its basic geographical significance, i.e., an explanation of the locational structure of a common spatial pattern, the problem has relevance in the forecasting phase of regional transport and economic planning.Previous network replication studies in geography have focussed on the explanation of transport link location and network structure through the simultaneous replication of an existing real world network for a given point in time.The related problem of how to forecast network growth, or for that matter, how to explain past growth, has not been examined by geographers to any great extent.Those network or link location studies which have been completed are static in nature, and the descriptive growth studies usually lack the