Three people were killed and 23 others hurt when a loaded 10-wheel truck crashed into five pickup trucks while descending a wet road in Kanchanaburi on Wednesday.
The crash occurred on a hilly section of Highway 323, about 8 kilometres from downtown Sangkhla Buri.
The pileup was reported at 9.56am.
Police said a 10-wheel truck had rear-ended five pickup trucks. The driver had lost control on the hill and the truck hit the five vehicles ahead of it.
The force of the collision forced some vehicles over the road's shoulder. Others were flipped over or rammed into the concrete barriers.
Rescuers used hydraulic cutters and a tractor to free the dead and injured. It took them over an hour.
Three men were found dead amid the wreckage and 23 people had injuries. Five were in critical condition and were rushed to hospital in Kanchanaburi. Many of the victims were Myanmar nationals.
Investigators said the road was slippery due to rain. The stretch where the crash occurred was known for its frequent accidents, particularly at the final sharp curve of the descent.
Preliminary findings suggested brake failure was the primary cause.
