Nine people were killed when a van crashed into a parked 10-wheel truck early on Monday, Thai police said.
Five people were injured in the accident shortly before dawn in Chachoengsao province, 70 kilometres east of Bangkok, Police Lieutenant Pongsak Inpong said.
The van smashed into a truck parked in the emergency lane after attempting to pass a vehicle and swerving too far back to avoid an oncoming car in the opposite lane, Pongsak said.