Hmm, no choice but to agree... Yeah, the info was from
wikipedia...
Tokyo Metro (just making comparison), in some curves, can only go
up to 40km/h, and once last year there was a derailment causing 5
deaths. I tried the Ginza Line (among many others) and met that
curve too, 40km/h, like crawling, 'cos you are looking in front,
the Metro trains have the driver's cabin open, as in glass
windows...