They have them here in some places too—the intersection at High Holborn and Kingsway, for example. I like them although most people pay them no attention and dash across no matter how few seconds are left.
Philadelphia & NYC too, and many other cities in the US, I don't doubt. But I've never seen the animations before; in case you can't read numbers? or just a further encouragement? Nor have I seen them for cars.
almost all traffic light intersections have pedestrian countdowns on 'em in Canada - makes it easier on the drivers too, you can tell just how stale that green light is.
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