Drink-driving accounted for 95% of cases during the 2021 New Year safety campaign from Dec 29 to Jan 4, according to the Probation Department.
Department chief Vittawan Sunthornkajit said on Thursday that during the period the department's branches handled 4,648 cases, 4,435 of which concerned drink-driving. The rest were drug abuses and reckless driving.
Most drink-driving cases happened in Surin (415 cases), Buri Ram (365) and Chaiyaphum (349), he said.
According to Mr Vittawan, 203 people were repeated drink-driving offenders over the past three years and 18 of them committed the offence during the same period last year.
People on probation were ordered to wear electronic monitoring devices, comply with a curfew from 11pm to 4am for 30 days and do social services.
The Probation Department planned to propose suspension of their driving licences in the future.