There are specific guidelines and norms for expansion and upgradation of National Highways on the basis of traffic volume. The details of vehicles registered in the country as available in VAHAN database during the last five years, State and vehicle type-wise is annexed. As per information received from Department of Heavy Industries, the investment in Automobile Industry between F.Y. 2013-14 to 2018-19 is to the tune of Rs. 1,07,07,153 Crores.