Folks. Please remember it is up to the police officer that pulls you over. If you just arrived then you can probably use for 2 months. However, after 2 months you will need a Thai license. Again, every province has different rules or interpret the law differently. I have Canadian bike with IDP and have been charged in CNX. 500 bahts if they actually write you a ticket. 1000 if they strong arm you. Fact is when they take your keys you are at their mercy. I would suggest to anyone just go get a Thai one. Very easy. But like I said every province seems to make up their own rules. And for 200 Bahts it costs the keys stay me and I ride away.
I live in nowhere's ville in Northern Thailand. (Near Mai Sai) I would check online for a place close to you. Remember to bring a medical check up paper with you. 50 bahts. Can get from any clinic within 5 minutes.
For 2000 bahts you will pass. Guaranteed. If you want a copy of the test IM me. Not cheating, but the computer test is odd. Sometimes 2 correct answers for 1 issue. By pre screening the test you will know what answer they are looking for.
Until they take your keys. I am legal. Watched the 6 hours of videos. Passed my 3 cone test. Dang. Was a wasted day but I am fully legal. Remember everyone. Every district is different. What happens in your district might not be the same in another. With license and plates gives you 25,000 bahts hospital care. Well worth the 900-1000 yearly tag.