I noticed this week that my driving license was showing my home address (on the reverse) that was 8 years out of date ...
As the driving license is an important proof of address I visited the Dept. of Land Transport at Banglamung to get it updated.
We (accompanied by my PA) arrived at 10AM with photocopies copies of my passport and the driving license, my original passport and driving license and a letter from Immigration proving my address.
1 hour later - and the modest fee of 155 THB - I had my up-to-date- driving license and I was legal once more!
Unfortunately their website is only in Thai language but more information can be found here http://www.fivestarvillasandcondos.com/Interesting-links/1070