Twelve lottery vendors heading from Ubon Ratchathani province to Bangkok were injured when their pickup overturned on a road in the Wang Noi district of Ayutthaya province early on Thursday.
The accident happened at 4.30am on the Bangkok-bound Phaholyothin Road.
The driver, Uthit Pimsup, 53, told police that he was travelling with six other men and five women to Bangkok to sell lottery tickets.
He said when he saw a pickup with goods overturned on the roadside, he tried to avoid it which resulted in his own pickup flipping over.
The injured were rushed to the Wang Noi hospital.