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xkcd #2929: Good and Bad Ideas
(imgs.xkcd.com)
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While it seemed like a fun prank at the time, I realize my prank fire extinguishers full of leaded gasoline were a mistake.
There are many of these where I live. The lights are usually timed so that you just go straight through without having to stop. They're much better than the traditional intersections that came before.
I will absolutely concede that they're shitty for pedestrians or cyclists, however.
The ones I've used time the pedestrian lights with the traffic, so it's safer for them. Still tricky for peds going across turn lanes.