Service station bogs have moved forward leaps and bounds here in isaan thailand.
Most chain stations now have what are classified as bogs for the handicapped, pregnant and feeble and I guess geezers, as well as pictured on the door sign. This bog is located at the PTT just inside the ring road (aka Highway 12) Maliwan Road at this point as you come into khonkaen from the west. It was clean  just after 0600h which is a good sign. Also remember to BYOB (bring your own bogroll).