In message , at 18:05:20 on Thu, 17 Aug
2017, Clank remarked:

I'm gonna bet that worldwide more buses have toppled over in the
last 12 months than trams in the last ten years...

While still on the road (remember, leaving the road and hitting a
kerb/barrier doesn't count). And what's the ratio of installed base of
buses vs trams.
--
Roland Perry