I don't think that "almost every thai on wheels, does them all every day", but it is certainly a substantial percentage. The key, in my mind for the short term gains is enforcement. For instance, a cop can drive or ride right by a motorcyclist with no helmet and not pull him over, if it is after 6 PM, or not "downtown"...and the police ignore so many other traffic violations. But, if they started enforcement and the cop asked for a "cash payment with no receipt"...that will not work. There has to be some respect for the laws. And how often do we see cops "patrolling"...not that often. They are normally at checkstops.