The term ‘structure’ denotes the layout, geometry or network pattern of transportation facilities or systems (Garrison and Marble, 1963, p. 140). The expression, which may be used synonymously, imply a set of spatial relation between distinguishable elements of transportation network, in respect to each other and to the organised whole. By measuring such relations we can quantify the notion of structure that is we can describe the structure of transportation networks in mathematical terms. Measure are numerical symbols expressing relationship between given properties. The obvious advantage of measure is that the numerically expressed element of an ordered set can be put in a one-to-one relationship with an ordered finite class of real numbers.

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Keywords: Structure, Layout, Geometry, Network Pattern, Transportation Networks.