@Stuart ********
Besides my Belgian International Driving Permit, I also needed my national driving license. This had to be translated by a recognized translation agency and legalized by the Belgian embassy. I also needed a medical certificate valid for a maximum of one month, and proof of residence from the immigration service specifically for the driver's license application! I had to watch a video for an hour about Thai traffic, and the tests you mentioned in your message. And don't forget: make an appointment with land transport.