The accident occurred at the main intersection on Thepkrasattri Rd in Koh Kaew at about 3:45am.
The driver of the truck, Tiradech Chanalim, 35, was taken to hospital for minor injuries sustained in the impact, said Sen Sgt Maj Sompong Chanchatri of the Phuket City Police.
“None of the 14 Chinese tourists were reported to have suffered any injuries in the accident,” said Sen Sgt Maj Sompong said, adding that all 14 tourists had already been taken to their hotel in Patong by alternative transport.
Truck driver Mr Tiradech told police that he was transporting goods from Bangkok to Phuket Town when the accident happened.
“He said that the truck’s brakes failed and he could not avoid hitting the back of the bus, which was waiting at the traffic lights,” Sen Sgt Maj Compong said.
However, Mr Tiradech might yet face charges over the accident.
“We have yet to conclude our investigation, and at this stage we are investigating the possibility that the truck driver might have fallen asleep at the wheel,” Sen Sgt Maj Sompong said.