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> That's what the yellow is for.
So, you make the yellow phase last long enough to cross the entire junction
at the slowest speed you can imagine for that junction? I guess that would
work, but then when the road is flowing normally, people would just continue
to drive through on yellow, knowing that it is going to last for 5 seconds
or whatever, when the whole point of yellow is for you to stop if it's safe
to do so.
In China I saw a few lights where they had a big 7-segment countdown timer
above the lights, looked like a pretty cool idea, well it would have been if
they paid any attention to the lights in the first place :-)
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