In order to boost economic development in the country the Government of India initiated a programme called National Highway Development Programme (NHDP).
NHDP has already completed two phases and third phase is ready to be implemented. The first two phases have the following components:
Gloden Quadrilateral (GQ) comprising National Highway connecting four metro cities - Delhi, Mumbai, Chennai and Kolkata. Total length of the Golden Quadrilateral is 5846 km. The construction has almost been completed. Out of the total 5846 km, four laning of about 4856 km length has already been completed by 31st May, 2005.
The second major task was the construction of North-South and East-West corridors comprising the national highways connecting Srinagar to Kanyakumari including Kochi-Salem spur and Silchar to Porbundur. The total length of the corridors is about 7300 km. But very little progress has been made so far. As on 31st May, 2005 only four/six laning of 707 km has already been completed.
The third significant task was four laning of about 356 km of highways to provide connectivity to 12 major ports and 777 km on other highways. As on 31st May, 2005, four laning of about 69 km roads of port connectivity and 287 km of other National Highways have been completed.
Apart from this National Highways Authority of India (NHAI) has already planned another five phases of NHDP. These are: