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Important Measures of Transport Networks

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Network analysis is an important aspect of transport geography because it involves the description of the disposition of nodes and their relationships and line or linkage of distribution . It gives measures of accessibility and connectivity and also allows comparisons to be made between regional networks within a country and between other countries. As Fitzgerald (1974) has said, variations in the characteristics of networks may be considered to reflect certain spatial aspects of the socio-economic system. The details of important measures of transport networks are given here for proper understanding and application of these measures for:   (i) The connectivity of networks; (ii) The centrality within networks; (iii) The spread and diameter of networks; and (iv) Detours. 1. Connectivity and its Measurement: “The connectivity of a network may be defined as the degree of completeness of the links between nodes” (Robinson and Bamford, 1978). When a network is abstracted