"But if nobody stops for pedestrians..."
Hey, some intersections NEED traffic lights. There's no doubt about that.
It's also incredibly obvious - to non-control freaks - that most of the ones that are only necessary at certain times of certain days should operate differently at other times.
It may be less obvious that there are certain places where traffic lights are simply unnecessary.
In neighborhoods like the one where I live, traffic lights are needlessly replacing stop signs - but not if you ask the many elderly people in those neighborhoods. (Neighborhoods that don't have a significant elderly population [yet] don't have this problem [yet], and yes, I said problem.)
Strangely, the elephant in the room that everyone seems to be ignoring is that they are the very same demographic that was getting killed on Queens Boulevard in the mid / late 90s:
foreign elderlies.
(Feel free to read about the Boulevard of Death).
(And don't get hung up on the foreign part, by the way. Their Amerikan born children and grandchildren are now playing chicken crossing the streets in alarming numbers.)
Where was I?
Their upbringing never included "Green Cross Code", "Cross on the Green, not in between", or any such things. An increasing number of people are actually brazen enough to put up a hand - as in, "stop for my hand" - while crossing without looking, expecting any oncoming vehicles to stop several car lengths behind the stop line. [Or worse ... some, after looking, and seeing an approaching vehicle, then proceed to step out and put up that same hand.]
[I have come to the conclusion that] there seem to be three populations that clamored to replace the stop signs with traffic lights:
1) The elderly people who fail to get across the street on the first or second try (without looking, only to be 'surprised')
2) Those whose hands don't seem to work well enough (some of these people even go so far as to stop in the middle of the crosswalk AND the oncoming cars' path to make the point about their hand)
3) Anyone else who witnessed a child who nearly got struck by a vehicle that actually had the right of way to begin with
Of course, upon replacing the stop sign with a traffic signal, they proceed to do the very same thing that got them killed on Queens Blvd: cross against a red light, without looking, with an upturned palm, while their progeny hone their 'traffic chicken' game.
Rule #7: Learn to cross the street without playing chicken.
Also, see Rule # 5 again.
In my teens, I remember pushing about one person (that didn't have the right of way) out of the way of an oncoming vehicle (that did have the right of way)
monthly.