Transportation
Two National Highways - NH 4 (Mumbai - Chennai) and NH 46 (Krishnagiri - Ranipet) connect parts of the district to other parts of the country. NH 46 passes through Vaniyambadi, Ambur, Vellore and Arcot before joining NH 4 at Ranipet. Both these highways are important connecting roads for vehicles especially travelling to Chennai from Bangalore and Coimbatore. Both these highways run for a length of 226 km (140 mi) in the district. Other important roadways present are State Highways of 629 km (391 mi) and district roads of 1,947 km (1,210 mi). Railway network in Vellore comes under the Southern Railways, with Vellore(Katpadi), Arakkonam and Jolarpettai forming the major railway junctions in the district. There are a total of 28 railway stations and a total of 152 km (94 mi) of rail tracks. There is a domestic airport which is not in use, but the nearest international / domestic airport at Chennai.
Read more about this topic: Vellore District