From 21 Aug 2026, M6 Bang Pa-in to Pak Chong is free on weekends only (Fri 12:00 to Sun 24:00), 4-wheel cars only, max 80 km/h, through 5 toll gates. There is no fuel station or EV charger on the route, so fill up or charge first. From 28 Aug 2026 (10:00), M82 Bang Khun Thian to Ban Phaeo (about 25 km) is free 24 hours, open to cars, trucks and buses, with 4 gates initially. Trucks and buses are capped at 65 km/h. If you run deliveries or staff trips on Friendship Highway or Rama 2, check the schedule before you change routes. Information line: 1586.