High Quality Content by WIKIPEDIA articles! National Highway 1 or (NH 1) is a National Highway in Northern India that links the National capital New Delhi to the town of Attari in Punjab near the India-Pakistan International border. This was a part of Grand Trunk Road of Sher Shah Suri, that ran from Lahore to Bengal, built on earlier roads that existed from time immemorial. National highway authority of India divided it into two parts, north of Delhi, called NH 1 and south of it, called NH 2. The highway is maintained by National Highways Authority of India. . This is one of the longest and oldest highways of India.