National Highway 12, previously NH 34, is a National Highway in India which runs entirely in West Bengal. It runs from its junction with NH 27 at Dalkhola terminating at Bakkhali.

National Highway 27, an East - West National highway in India that starts in Porbandar and ends in Silchar, the highway passes through the states of Gujarat, Rajasthan, Madhya Pradesh, Uttar Pradesh, Bihar, West Bengal, Assam. NH-27 was laid and is maintained by Ministry of Road Transport and Highways (MoRTH). It is the second longest National Highway in India and is a part of NS-EW Corridor of NHAI.