I think I've Figured Out Nagasaki's Bus System
I was pondering why the hell anyone would think ending public transport from 9-10:30 was a good idea. Who goes home at that hour on a weekend? Now that I've experienced the London drunk bus system, I get it. London is a)flat and b)has not discovered all-you-can-drink, so the puke potential is relatively low. I am sure there there is some puking potential calculator the Japanese transport systems use to decide when to shut down. Basic factors to consider in all towns-> average nomihodai start time, average # of drinks consumed per person per hour of nomihodai, time at which puking potential is reached. From here, you calculate an average bus ending time that guarantees the buses will remain puke free. However in Nagasaki, half the routes are puke-worthy even while sober so when you calculate that in it's like one 2 hours of nomihodai-ing before critical puking mass is reached and the buses must shut down for fear of being overrun by puking salarymen. Average bus end time = 9:45.
This, however, doesn't explain the trams ending at 11 or the ever popular Beer Tram.
I think London should run an experiment and run a Beer tube on the Picadilly Line from Heathrow- that tube is pukeworthy even on a good day and seems the most likely to have people wearing really strong fragrances on it, for some reason.