Transport networks spur economic growth during their creation, through their maintenance and upgradation and most importantly, by their use. India has the second largest road network in the world of about 63.86 lakh km after U.S., encompassing primarily National Highways, Expressways, State Highways, Major District Roads, Other District Roads and Village Roads. Infrastructure development could be demand-driven (e.g. bypasses, bridges) or supply-driven (e.g. expressways). Over 64 per cent of commodities in the country are transported through roads, while 90 per cent of the total passenger traffic uses road network to commute. Roads and bridges contribute 18 per cent (out of ?57 lakh crore) in infrastructure investment done in India from 2013-19. The National Infrastructure Pipeline (NIP) is also expected to contribute 18 per cent (out of ?111 lakh crore spanned over FY20-25) towards the same.