Which is the most important mode of transport in India?

Roadways are the most important means of transport because a) construction cost of roads is much less than that of railway lines b) roads can traverse comparatively more dissected and undulating topography c) roads can traverse higher gradients d) road transportation is economical in transportation of few persons and relatively smaller amount of goods over short distances e) it also provides door-to-door service f) road transport is used as a feeder to other modes of transport.