Thailand is right hand drive so same as sg. If u drive enough in sg then should be fine there. Be more careful when coming out from small road and look out for car coming from small road. Other than that mostly the same ba.
BKK itself traffic is bad. Outside of it is ok. But depending on when you go, the traffic can be bad outside as well like if u go on songkran then good luck to you.
It's easy. Mostly one way not much turning until you reach ky. Renting from airport usually more expensive than downtown but probably more convenient. If normal car + insurance depending on company, maybe 50-60? Without driving, I'm not sure how u can roam in KY. If u take your bus there then have to follow the bus? Unless you rent driver to send u there and drive u around but alot more expensive than self drive.
Wow thank you so much for the advice. My other half, not keen in driving, worry stress during travelling... Alternatively bus to Khao Ya and see can rent Motorbike moving around in Khao Ya then bus back to Bangkok again.. wonder if this works... otherwise will try to convince driving to my other half. hahaha..
Never been to Khao Ya before, time to read about where to visit. Is February a good month to visit?