@Patrizio *******
no need for a driving test if you hold an eligible foreign licence to convert and get an international driving permit, which is easy.
You need yellow book or do your first 90 day report so you can get a residence certificste. Then buy your medical certificate at a local clinic for 50 Baht.
Turn up early at your local Transport Department office, do the vision test, the reaction test, watch a 1 hour video snd leave with your Thai driving licence in hand. Simple to do if you follow the steps.