M6 Bang Pa-in–Pak Chong trial extended through 29 September

Bangkok, September 27, 2026 - The Department of Highways has decided to extend the trial running of the M6 motorway between Bang Pa-in and Pak Chong until 29 September, a move to offer motorists an alternative passage due to flooding affecting major highways. The 110-kilometre stretch of Motorway No. 6 is currently free for all drivers.

Initially, this route was planned for trial operation on Fridays, Saturdays, and Sundays. However, the temporary extension now allows continuous use of the Bang Pa-in–Pak Chong section until midnight on the specified date.

The Department's decision aims to alleviate traffic congestion on highways like Phahonyothin Road, connecting Bang Pa-in to Saraburi, and Mittraphap Road, linking Saraburi with Kaeng Khoi, all of which are impacted by flooding. Post the extension on September 29 at 24:00, the M6 trial service will revert to its original schedule, offering free access only on Fridays, Saturdays, and Sundays. The subsequent regular opening is slated for Friday, October 2, 2026.

Currently, owing to ongoing construction, motor vehicles are the only permitted users on the M6, with a speed limit set at 80 kilometres per hour. The Department of Highways has emphasized the need for motorists to drive cautiously, refrain from stopping or parking unnecessarily on the motorway, and adhere strictly to all traffic signs and instructions from officials.

For real-time updates on road conditions, motorists can dial the Department's hotline at 1586, press 6, which is available free of charge on all networks, 24 hours a day.