In a televised broadcast, deputy army spokesman Winthai Suwaree said travellers who are to leave or enter the kingdom during the curfew period will be allowed to move to their destinations.
Other groups include private employees or government officials working night shifts in various sectors such as factories, hospitals, aviation businesses and perishable food logistics. Exemption also covers people in need of travelling to hospitals and humanitarian workers.
People who happen to have urgent or important errands during the curfew hours are advised to ask for permission from military officers near their homes.
The exception was meant to reduce the impact of the curfew, Col Winthai said.