The Department of Highways says M82 (Ekachai to Ban Phaeo, about 25 km) is free to use 24 hours a day during a trial, averaging 29,689 vehicles a day in the week of 11-17 September 2026, up 3% on the previous week. It has cut traffic on Rama 2 by about 21% inbound and 23% outbound to Bangkok. For businesses in Samut Sakhon, south-bound logistics and delivery routes, this is a faster alternative to Rama 2. Only four interchanges are open (Phanthai Norasing, Mahachai 1 and 2, Ban Phaeo); Samut Sakhon 1 and 2 are still under construction. Speed limits: 80 km/h for cars, 65 km/h for trucks and buses. Motorcycles, bicycles, tricycles and pedestrians are not allowed.