Seventy people died and 527 hurt as Songkran travellers smashed their way into 520 traffic accidents on Sunday.
Yesterday's carnage brings the April 9-12 total to 191 dead and 1,808 injured in 1,735 traffic accidents, but all three figures showed improvement over last year, Public Health Minister Rajata Rajatanavin said.
He said total accidents dropped by 14%, fatalities by 7% and injuries 16% year-on-year.
During the period, Chiang Mai saw the highest number of accidents with 66. The largest number of people killed, nine, was in Roi Et province, and the highest number of injured, 71, was in Surat Thani.
Despite the improved statistics, Dr Rajata warned Songkran was only half over and urged increased caution.
Drunk-driving and speeding remained the leading causes of accidents during the Thai New Year period. Motorcycles also held their position as the deadliest mode of transport.
Peak hours for accidents were from 4pm to 8pm and most victims were people of working age.