วิธีขึ้นมอเตอร์เวย์ M81 บางใหญ่ กาญจนบุรี ด้านต่างระดับบางปะอิน บางใหญ่(ถนนหมายเลข 9)

As the M81 motorway is a new route opened to vehicles starting in October 2025, it runs from Bang Yai District, Nonthaburi Province, to Kanchanaburi Province, covering a distance of 96 kilometers. There are eight entry and exit points: Bang Yai Toll Plaza, Nakhon Chai Si Toll Plaza, Sisa Thong Toll Plaza, Nakhon Pathom East Toll Plaza, Nakhon Pathom West Toll Plaza, Tha Muang Toll Plaza, Tha Maka Toll Plaza, and Kanchanaburi Toll Plaza. During the pre-New Year period, it will be free to use 24 hours a day, after which a toll will be charged.