At least 14 people were killed on Saturday morning when the pickup truck in which they were travelling rammed into another truck ahead in Thailand's northeastern province of Roi Et, a media report said.
The driver of the pickup truck lost control of the vehicle when one of its tyres burst which caused the accident, the Nation news network reported.
The pickup truck was rushing to an election centre in Phanom Phra district at the time of the accident.
Fourteen people died on the spot, while two injured were taken to a hospital.
There were no casualties on the other truck.
No further details were immediately available.