A bus headed to New Delhi from the Pakistani city of Lahore collided with an army truck in the Indian state of Punjab but there were no injuries, police said.
The bus carrying 24 passengers was delayed for repairs for an hour some 80 kilometers (50 miles) from Amritsar, site of the Golden Temple, the holiest Sikh shrine.
The Lahore-Delhi bus service, known as the "friendship bus," is one of three bus links nuclear-armed India and Pakistan have been operating as part of a slow-moving peace process.
Police said the accident occurred in early afternoon soon after the bus crossed the northern Indian border post town of Wagah.
The South Asian neighbours launched the link between New Delhi and Lahore in 1999, but the service was suspended following a deadly raid on India's parliament in December 2001 that India blamed on Pakistan-based militants.
The link was restored in 2003 when relations between the neighbours began to improve.
A second bus link opened between the Kashmiri cities of Srinagar and Muzaffarabad last April. A third bus between Amritsar and Lahore started running Friday.
