GT meaning in Transport & Travel ?

The Grand Trunk Road formerly known as Uttarapath, Sarak-e-Azam, Badshahi Sarak, Sarak-e-Sher Shah is one of Asia's oldest and longest major roads. For at least 2,500 years, it has linked Central Asia to the Indian subcontinent. It runs roughly 2,400 km (1,491 mi) from Teknaf, Bangladesh on the border with Myanmar west to Kabul, Afghanistan, passing through Chittagong and Dhaka in Bangladesh, Kolkata, Allahabad, Delhi, and Amritsar in India, and Lahore, Rawalpindi, and Peshawar in Pakistan.

Chandragupta Maurya of the Mauryan Empire in ancient India, built his highway along this ancient route called Uttarapatha in the 3rd century BCE, extending it from the mouth of the Ganges to the north-western frontier of the Empire. Further improvements to this road were made under Ashoka. It was rebuilt many times under Sher Shah Suri, the Mughals and the British along a partly similar route. The old route was re-aligned by Suri to Sonargaon and Rohtas. The Afghan end of the road was rebuilt under Mahmud Shah Durrani. The road was considerably rebuilt in the British period between 1833 and 1860.

The road coincides with current N1, Feni,(Chittagong to Dhaka), N4 & N405 (Dhaka to Sirajganj), N507 (Sirajganj to Natore) and N6 (Natore to Rajshai towards Purnea in India) in Bangladesh; NH 12 (Purnea to Bakkhali ), NH 27 (Purnea to Patna), NH 19 (Kolkata to Agra), NH 44 (Agra to Jalandhar via New Delhi, Sonipat, Panipat, Ambala and Ludhiana) and NH 3 (Jalandhar to Attari, Amritsar in India towards Lahore in Pakistan) via Wagah; N-5 (Lahore, Gujranwala, Gujrat, Lalamusa, Jhelum, Rawalpindi, Peshawar and Khyber Pass towards Jalalabad in Afghanistan) in Pakistan and AH1 (Torkham-Jalalabad to Kabul) to Gazani in Afghanistan.

Over the centuries, the road acted as one of the major trade routes in the region and facilitated both travel and postal communication. The Grand Trunk Road is still used for transportation in present-day Indian subcontinent, where parts of the road have been widened and included in the national highway system.