The expressway’s new one-pass system launches Nov. 1
As of Nov. 1, drivers with an M-Pass or Easy Pass can use either of the cards to pay all their tolls on the expressway. That extends to paying tolls on the ring roads and motorway as well.Read more
You can read full article here: http://bangkok.coconuts.co/2016/10/28/expressways-new-one-pass-system-launches-nov-1