I started this thread, to quantify things for a mate, who has just arrived in Thailand.
For all those that "know" Thai road rules, and refuse facts, even international agreements, I have used my Australian License in Phuket, Pattaya, Mukdahan, and Chiang Mai, including all province's/towns/etc in between, have been stopped at many check points and shown my Aussie license, and have experienced no problems, NOT once being asked for IDP.
So, can we now put an end to this thread, and stop the bickering.