The BJP initiated the Golden Quadrilateral Project when they were in power.
This created a large set of highways connecting the whole of India and strengthening national integration.
In just 5 years of power, the BJP build more roads and highways than what the congress did in 50 years in power.
Roads are the arteries of a successful economy and good infrastructure, and the bjp has done more for indias economy and infrastructure in 5 years than the congress in their 50 years or any other impotent political party.