Delhi–Lahore Bus

The Delhi–Lahore Bus, officially known as Sada-e-Sarhad (Translation: Call of the Frontier, Hindi: सदा ए सरहद; Urdu: صدائے سرحد), is a passenger bus service connecting the Indian capital of New Delhi, Delhi with the city of Lahore, Pakistan via the border transit post at Wagah near Attari. The Routemaster bus number 10 was of symbolic importance to the efforts of the governments of both nations to foster peaceful and friendly relations. In its inaugural run on 19 February 1999, the bus carried the then-Indian Prime Minister Atal Bihari Vajpayee, who was to attend a summit in Lahore and was received by his Pakistani counterpart, Nawaz Sharif at Wagah. In August 2019 Pakistan decided to stop the service in the wake of India revoking Jammu and Kashmir's special status.

Officially launching its services on 16 March, the bus service was not halted even after the outbreak of the Kargil War. The bus service was halted in the aftermath of the 2001 Indian Parliament attack, which led to a serious confrontation between the two neighbours.