you know, what with double-decker buses being such a uniquely UK thing, we never thought before to wonder: why don't they exist elsewhere? Or do they exist elsewhere and we never hear of them for some reason?
@Felthry They're in Singapore. I used to quite like riding up front on the upper level, as it gave me those good mini-macro feelings.
If I thought this actually motivated transit agencies I'd wonder if double-decker commuter buses are disfavored as making half the seats an accessibility problem.
I do see a fair number of double-decker roofless buses as tourist buses, in towns that need tourism buses, where there's less time pressure to get people to and from seats.
@Felthry There are some in the Seattle area; I've never ridden one because they don't go anywhere I need to, but they're operated by Community Transit.
I guess there's always the obvious rollover risk with a high center of gravity but that can't be the only reason