Road map of India with National Highway 8 highlighted in solid blue color
|Length:||1,428 km (887 mi)|
|North end:||New Delhi|
|South end:||Mumbai, Maharashtra|
|Delhi - Jaipur - Ajmer - Beawar - Udaipur - Ahmedabad - Vadodra - Surat - Mumbai|
National Highway 8 (NH 8), is a National Highway in India that connects the Indian capital city of New Delhi with the Indian financial capital city of Mumbai. As per estimated it is supposed to be the busiest highway in the subcontinent, as it connects the national capital to financial capital along with economic giants like Ahmedabad, Vadodara and Surat in between. The highway passes through the State capitals of Gandhinagar and Jaipur, as well as important cities like Gurgaon, Ajmer, Udaipur, Ahmedabad, Surat and Vadodara. The total Length is 1,375 km (854 mi). NH8 stretch on Delhi-Gurgaon border is India's deadliest road.
This highway is part of the Golden Quadrilateral project undertaken by National Highways Authority of India and was the first part to be completed. The Delhi-Gurgaon Expressway and NE 1 are the part of NH 8. Before entering downtown Mumbai, NH 8 passes through nearly all suburbs on the Western line of Mumbai Suburban Railway, where it is popularly known as Western Express Highway.
Delhi Mumbai Industrial Corridor Project 
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. 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 of the project is likely to be completed by 2012 with an estimated $90 billion ( Rs 4,23,000 crore) to be invested to develop infrastructure in the investment regions.
Northern Peripheral Road 
Northern Peripheral Road road is being developed under the public private partnership (PPP) model. This stretch will connect Dwarka with National Highway 8 at Kherki Dhaula and will pass Pataudi Road. The NPR stretch has been planned as an alternate link road between Delhi and Gurgaon, and is expected to ease the traffic situation on the Delhi-Gurgaon Expressway. The road will also provide connectivity to the much-touted Reliance-HSIIDC SEZ besides the Garhi Harsaru dry depot.
Much like Delhi, Gurgaon too will have a BRT corridor to decongest traffic on the Northern Peripheral Road .In several sections, the NPR will have provisions for the Bus Rapid Transit (BRT) corridor to ensure smooth flow of traffic. The road will be fully developed in March 2012.
See also 
- List of National Highways in India (by Highway Number)
- National Highways Development Project
|Wikimedia Commons has media related to: NH 8 (India)|
-  Details of National Highways in India-Source-Govt. of India
- "Haryana to fast-track early bird projects on industrial corridor". Thaindian.com. 2009-12-23. Retrieved 2010-07-16.
- "Delhi-Mumbai industrial corridor gets Japan’s push | Real Estate News, property news, Property classified, property listing, realty, real estate India". Blog.propertynice.com. 2009-12-29. Retrieved 2010-07-16.
- "HUDA floats tender for Northern Peripheral Road". The Times Of India. 2011-02-17.
- "HUDA plans BRT corridor on upcoming NPR project". The Times Of India. 2011-02-18.
A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia.