For those who don't know already there is about 15-20 kms of road construction south of Chiang Dao on 107. It's very passable but dusty and the slow trucks cause jams on the hills. If you are heading further north you might consider 1001 to Phrao and then go left on 1150 back over to 107 to bypass it all. I did it today and it was much faster with much less traffic. -Russ