Maps of Thailand and Isaan ...

[pong]

I meant-as was also mentioned in the posts/rersponse before, the 2 split offs that were created as totally new prov. from those-+ Beung Khan from NgKhai.

Back to another subject:
Yes, its officially also REGIONS here in TH-in fact any province (chiangwat) is also tied into a region. You can even see that from the nrs the provinces have. Normal cars only show the name on the plates, but buses+trcuks show the name (in Tai) and the nr in tiny figures. Busestrucks have plates with only numbers- public buses started with 10-0001 in all provinces, here in BKK they have now reached 16-6xxx, but most other provinces have far fewer.
These provincial nrs are a bit similar to what FRance has for its departements-but there they do it alfabetically and here in TH its geografically. Thus BKK is 01 and there are clusters for central-east-northeast(=Isan)-north and south. There are some gaps at the end of a series for 1 region to allow for new nrs for those splitoff new ones.
There is also a national line system for all interurban buses based on this. It started with lines 1-99 which all fanned out from BKK (48 to Pattaya, 18 to ChMai etc.), then the 1xx series is for lines wholly In central but more as 1 province, 2xx for wholly in north etc.-untill 998, 999 means a very high luxury VIP type of bus and is not a line nr.
Lines IN a province but in more as 1 amphoe get 4 digit nrs. 1631 is in Cholburi and runs from that city along Patters to Sattaheep.
Lines IN 1 amphoe get 5 digit nrs and the first 2 are those of the province-hence all Patters ´baht buses´ have nrs as 23.xxx
These are just the basics, but TiTs thus there are many exceptions and errors, but this is the basics how it should work. This is unique in the world now-only the old DDR had such a system but thats completely forgotten and deleted. But thus you can even about guess where a bus runs to by seeing its big nr on the side. All together totally useless superfluous for most/all of you, but just to show that there is indeed someone somewhere in TH in some govmt office who does think and plans. If they could just also do that for more important things.................
The BMTA citybus here in BKK and also the 100s of red songhthaews are completely out of this system as its done by the BMA and not the govmt BoKoSo. ONce they have tried to renumber it into a kind of logical system that would indicate to where it runs and what type of bus (by numbers and letters) but this was so utter confusing that they stopped it after too many protest But they try again for brandnew lines like from Vict.Monument via new motorway to Bang Phlee or Mochit-SalaYa /new Mahidol Uni.