OK, I think I’ve figured out the traffic rules here.
Big vehicles (like cars and busses) aren’t expected to look out for the little guys (pedestrians, bikes, mopeds, rickshaws) aside from giving a pre-emptory “Here I come, stay/get out of my way” honk (to which the little guys comply). The little guys have to just fit around the big guys on the road. The big guys are, however, gracious towards each other, accomodating vehicles that are equal or greater to them in rank, allowing them to cut in or pass without challenge.
Compare to the USA: The big guys have to, by law, look out for the little guys. If a car runs over a pedestrian, there is hell to pay (legally and socially). But if another car, equal or greater in size, tries to overtake us, we generally consider it a impingement on our personal space and may even get aggressive about it.
What might this say about our different social orders and psychologies? Discuss.