It really does function better (and faster) when everyone just does the right thing. Thailand is filled with "me first, me only" drivers and this not only results in bad accidents but it has an overall detriment on the ability for anyone to get anywhere in a timely fashion. It's impossible to get people to understand this though when there is basically zero enforcement of any sort of road laws in Thailand. That would be step one. If there are no consequences for driving like a dickhead, or even driving one-eyed drunk, people are not going to change their behavior.