Graph Representation of a Real Network Basic Graph Representation of a Transport Network Isthmus Connection Planar and Non-Planar Graphs Connections and Paths Length of a Link, Connection or Path Cycles and Circuits Tree Graph Connectivity in a Graph Diameter of a Graph Diameter of a Graph - 2 Number of Cycles Order of a Node Pi Index and the Shape of Transportation Networks Eta Index Theta Index Iota Index Beta Index Alpha Index Gamma Index