The right turn across oncoming traffic on a two-way street, which is a left turn for y’all in the states, is easily the most dangerous manuever. The book says to use a turn signal, slow gradually, ease to the middle of the road and then go when both oncoming traffic and one’s intended path after the turn is clear. Try that in Thailand and some testosterone crazed hotshot will seize the opportunity to zoom by on the right, usually just as one starts the right turn. Only way I’ve figured out how to avoid this is to not signal or slow sooner than necessary and then just jam the right turn. That’s not safe so I only do it when I can’t take a route that involves no right turns.