National Highway 48 (India)(old numbering)
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 328 km (204 mi). The highway is known as B.M. (Bangalore- Mangalore) Road and B.H. (Bangalore - Hassan) Road in some stretches where it traverses.
The traffic on this highway has increased after 1990 mainly due to the setting up of MRPL at Katipalla, Mangalore. This highway for movement of goods to and from New Mangalore Port. The government undertaking KSRTC runs several buses day and night in between these two cities along with private operators.The trucks and trailers carrying LPG and other petroleum products from MRPL to Bangalore have been frequent cause of accidents in this road. Also the condition of this national highway gets worse during monsoon ( rainy ) season especially in ghat section. Travellers avoid this route and take either Bangalore-Mysore-Kushalnagara-Mangalore or Charmadi route during rains from month of June to October, even if it takes longer time.