The bus hit the trailer from behind while trying to overtake it on a bridge.
Six people were killed and at least 15 others injured after a bus rammed into a trailer on the Ahmedabad-Mumbai national highway on the outskirts of Vadodara city in Gujarat in the early hours of Tuesday, police said.
The accident took place around 4 am when the luxury bus was going towards Surat from Rajasthan, they said.
It hit the trailer from behind while trying to overtake it on a bridge on the highway, an official from Panigate police station said.
As many as six passengers were killed and at least 15 others injured in the accident, Deputy Commissioner of Police (Zone-3) Yashpal Jaganiya said.
"Four persons were killed on the spot and two others died in hospital," he said.
A child, a woman and four men were among those killed, the police said.
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