From the linked article:
"The ThaiRSC reported in January that as many as 939,713 road accidents were reported in Thailand last year, up 4.7% from 2021. Road accidents killed 14,737 people, and injured 924,799 last year, ThaiRSC said. The committee reported that 536 deaths and 7,885 injuries were among foreigners.
Following the Songkran holiday this year, during the ‘seven deadly days‘ from April 11 to 17, the Department of Disaster Prevention and Mitigation (DDPM) revealed that there were 2,203 road accidents, 2,208 injuries, and 264 deaths during this period."
For the year the average is 40.37 deaths per day. For the 'seven deadly days' the average is 37.71 deaths per day.
So perhaps they should call it the 'seven less deadly days'
And we know the figures are much higher as they don't count those who make it to the hospital but die there.