[littlestymaar]

True, though emergency braking isn't entirely subject to these limitations.

At least for tramways I know for sure[1] that the tram will happily have you break your arm inside the tram because it braked too strong in case of emergency rather than crushing a pedestrian that crossed in front without paying attention.

Maybe the rules are different for metros though, given that there aren't as many pedestrian on the way…

[1] because I got the information from the system design team of a big tramway manufacturer I worked with no later than last year so my memory is much fresher, and the source is more reliable.

[inferiorhuman]

Muni reduced the emergency braking force back in 2008–2009 or so, because, yes people were getting injured (and given how frequent EB applications were back then…). You can definitely achieve sufficient braking without having to violently throw people to the ground.