Trafic and trainsport in VietNam is hassle and free. Well... it is if you bite a mental bullet and embrace the concept that amost everyone, everywere. is running about like a madman. The people often do not comply with any rules of the road. It is quite common to ride on sidewalks, pavement and the wrong way in one way traffic. An exception might perhaps be in the large and well know city center, where there may be a group outbreak of sensible driving following some rules of the road. But stay calm ! and you won't see a lot of accidents