Rail and roads are complementary to each other. Explain?

Rail and roads are complementary to each other, which means road system links up cultivators with the local market and with the nearest railway station, whereas railways provide connecting links between the area of production and the consumers. If roads provides door to door links, railway links up long routes. Thus, both the major means of transport should be complementary rather than competitive to each other. If at all, these are becoming competitive in certain areas, government should devise such a National Transport Pblicy so as they work in a co-ordinated manner