The 32-lane now adjunct toll gate at the Delhi-Gurgaon border was the largest in South Asia and the second largest in Asia.
Expressway also connects both cities with the airport
The Delhi-Gurgaon Expressway is a 27.7 km (17.2 mi) six to eight lane expressway connecting the national capital, Delhi and the satellite city of Gurgaon, Haryana in the National Capital Region of India. The expressway is a part of the Golden Quadrilateral project, which itself is a part of the National Highway Development Project. The ₹10 billion (US$148.6 million), 47.7 km (29.6 mi) expressway was thrown open on January 23, 2008. This expressway is the busiest inter-city route in India and handles more than 180,000 PCUs daily. It starts at Dhaula Kuan in Delhi and terminates on the outskirts of Gurgaon. The road has 11 flyovers and overpasses with 47 km (29 mi) of service roads for local and slow moving traffic.