National Highway 4 (India)(old numbering)

National Highway 8
Road map of India with National Highway 8 highlighted in solid blue color
Route information
Length:	2,807 km (1,744 mi)
Major junctions
North end:	New Delhi
	List NH 1 in Delhi NH 2 in Delhi NH 10 in Delhi NH 24 in Delhi NH 71 in Bawal NH 11A in Manoharpur NH 11 in Jaipur NH 12 in Jaipur NH 79A in Kishangarh NH 79 in Ajmer NH 89 in Ajmer NH 14 in Beawar NH 76 in Udaipur NH 8C in Chiloda NH 59 in Ahmedabad NE 1 in Vadodara NH 6 near Surat NH 3 in Mumbai
Location
Primary destinations:	Delhi - Jaipur - Ajmer - Beawar - Udaipur - Ahmedabad - Vadodara - Surat - Mumbai -
Highway system
Indian road network National Expressways State ← NH 7A NH 8A →

National Highway 8 (NH 8) was a 4-lane (6-lane between Delhi-Jaipur) National Highway in India. According to estimates, it is the busiest highway in the subcontinent, as it connects the national capital Delhi to the financial capital Mumbai, as well as important cities Gurgaon, Jaipur, Ajmer, Udaipur, Ahmedabad, Vadodara and Surat. The total length is 1428km.

The highway is part of the Golden Quadrilateral project undertaken by National Highways Authority of India (NHAI) and was the first section to be completed. The Delhi-Gurgaon Expressway , Jaipur-Kishangarh Expressway , and NE-1 are part of NH 8. Before entering downtown Mumbai, NH 8 passes through nearly all the suburbs on the western line of Mumbai Suburban Railway, where it is popularly known as Western Express Highway.

This Indo-Japanese multi-billion Corridor lies on National Highway-8. Delhi Mumbai Industrial Corridor Development Corporation Limited (DMICDC), the special purpose vehicle (SPV) floated by the government of India for implementing the DMIC projects, had appointed the consultant for undertaking a study on the master plan for the Manesar-Bawal Investment Region (MBIR) and undertaking pre-feasibility studies for two early bird projects. The Haryana government had identified four Early Bird Projects to be implemented as a pilot initiative within the DMIC region, which includes Mass Rapid Transportation System between Gurgaon-Manesar-Bawal, exhibition-cum-convention centre, integrated multi-modal logistics hub and new passenger rail link. The first phase was completed by 2012 with an estimated $90 billion ( Rs 4,23,000 crore) to invested developing infrastructure in the investment regions.