Rules of the Road - Thai Style

A vehicle following you no closer than 10 cm is not considered to be tailgating.
If the driver in front of you, especially a truck, flashes his left turn signal a few times, he may be telling you that it is safe to pass. But he may be wrong .. or may simply bored.
If the driver in front of you, especially a truck, flashes his right turn signal a few times, he may be telling you that it is not safe to pass. And he will usually be right.

If a driver approaching from the opposite direction flashes his headlights it may mean
- "police ahead, watch your speed"
- or "don't pass that car, you fool, I'm coming too fast!"
- or "I have screwed up big time by trying pass this vehicle so please give me some room by heading for the shoulder .. even the rice paddy isn't a bad idea"
The largest vehicle has the right of way, except elephants always have the right of way and water buffaloes come second.
Expect buses, especially orange ones, to overtake on curves, hills and as you are approaching from the opposite direction.
If you are on a motorcycle and see an oncoming bus, expect another bus to overtake it; especially if the road has no shoulders.
If you are overtaking a vehicle, expect another driver to decide to overtake you at the same time.
If you are on a motorcycle or bicycle, keep as careful a watch behind as in front of you.
If you have an accident, you will most likely be blamed.
Learn to read the Thai script for "Man" and "Lady" for service station restrooms