Answers

2016-05-03T15:28:35+05:30
A transport network, or transportation networkis a realisation of a spatial network, describing a structure which permits either vehicular movement or flow of some commodity. Examples are network of roads and streets, railways, pipes, aqueducts, and power lines. 
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2016-05-03T15:55:19+05:30
They're basically et of links, nodes, and lines which represent the infrastructure of the transportation
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