To be fair, the Kantō Plain is similar in size to the Sacramento Valley (more than a third of California's Central Valley), and much bigger than the available land in the Bay Area...
It might not be terrible. The city average might be a more useful statistic for purposes of this law... and it may well be the statistic available nationally is the median.
Also note that listing the 5 forms using they/them/themself/their/theirs was intentional, because both of the following analogs to that list have a word appearing twice (but in different places):
he/him/himself/his/his
she/her/herself/her/hers
(Hooray for English!)
One reason is that for folks who use other pronouns that you might not be familiar with, you need to know all the forms (declensions).
That said, there are more forms... why not they/them/themself/their/theirs, etc.?
Domestic flights in New Zealand operate (as of a few years ago, anyway) on much less security than the US. Sometimes none, depending on the airport and size of plane.
I recall the big change in the US (particularly PHL) after 9/11 was that you needed a ticket to get to the gate; before that my parents would meet me at the gate when I was arriving.
Taking shoes off and the liquids ban was substantially post-9/11, if I remember correctly.
Sure, some people will choose not to ride. Some will look at the schedule. And some will just show up.
I'd be interested to see a graph of how those three populations change in response to headways.
I also think the lines may get a lot longer when things are a bit delayed.
(Closing at the faregates I've only seen once or twice; that's when things are so delayed that the platform is full and not clearing. I just took the Muni J-Church instead...)
(a) I don't think BART's rush hour operations are that accurate and (b) at 15 minute headways, it's actually not unreasonable to wait; some folks don't want the stress of planning. (Also Pittsburg line runs 2 trains per 15 minutes, with one short-turning.)
Yes, at least in 2016/2017. I stopped commuting through Embarcadero in December 2017.
And I wouldn't say loiter -- there's crowding (and lots of lining up) waiting for east bay lines on the platform (and that's where you're supposed to wait for trains!) during the pm rush.
I think the problem is platform crowding by people waiting for east-bay-bound trains (where each line is running every 15 minutes)... due to people not moving away from the escalator, leading to the escalator dumping people into an area that can become dangerously overcrowded.
Disabling one of the down escalators is (or was) a regular certain-times-of-the-day (pm rush) thing, but closing the faregates is more of an emergency thing.
(Disabling the down escalators seems because people don't walk away from the escalators when they get to the bottom.)