From 12.01am until midnight of December 5, vehicles can travel past any toll booths of the Chalerm Maha Nakhon, Sirat and Udon Ratthaya expressways free of charge.
The authority also urged people to use Easy Pass system to pay for toll fees instead of cash or coins to avoid creating traffic jams at toll booths.
Easy Pass can be easily topped up using the Exat Portal mobile application, which can also check for available balance and latest promotions.
Exat also offers an application called Exat Traffic for those who require roadside assistance on the expressway. For more information, contact call centre 1543.