A total of 48 people were killed and 541 injured in 496 road accidents on Dec 30, the fourth day of the "seven dangerous days" of the New Year festival.
Monday’s fatal accidents increased the road toll for the first four days to 209 killed and 1,931 injured in 1,818 accidents, the Disaster Prevention and Mitigation Department's Road Safety Operation Centre reported on Tuesday.
The 209 death toll was up eight, or 3.98%, on the same period a year ago. The number of injured people, at 1,931, was up by 34, or 1.79% higher than the same period of 2012.
The province with the highest accumulated number of deaths (13), injuries (81) in the past four days was Nakhon Ratchasima, with the highest number of accumulated accidents in Nakhon Sawan (66).
Only 14 provinces have no traffic-related deaths, down from 21 provinces at the end of the fourth day of the holiday period last year.
Drink-driving and speeding remain the major causes of accidents, the centre said.