National Highway 48 or NH 48 is a National Highway of India running entirely within the state of Karnataka.It is renumbered as NH-75 now. It links the Port city of Mangalore with the state capital Bangalore, two major cities of Karnataka state. NH 48 passes through towns of Nelamangala, Kunigal, Channarayapatna, Hassan, Sakleshpura, Uppinaangadi and reaches Mangalore. It climbs the Western ghats through the Shiradi range. Total length of this highway is . The highway is known as B.M. (Bangalore- Mangalore) Road and B.H. (Bangalore - Hassan) Road in some stretches where it traverses.

National Highway 8 (NH 8) is 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.