The passengers of the private airconditioned bus got down through emergency and other exits as soon as the vehicle caught fire in the small hours.
The 21-year old motorist was injured in the mishap which occurred when the bus proceeding to Coimbatore from Chennai collided with the two-wheeler. He has been admitted to the government hospital here with fractures in both legs.
Under the impact of the collision, the petrol tank of the motorcycle caught fire and exploded and the blaze spread to the bus, police said.
However, the belongings of the passengers were gutted in the fire, which was put out by Fire and Rescue service personnel who rushed to the spot.
Police said the driver of the bus has been arrested for IPC offences rash driving and endangering human life.