On Tue, 20 Oct 2009 13:00:23 +0100, Adrian C wrote:
Traffic lights in Bulgaria (and probably elsewhere, Russia?[*]) have
countdown red/green digital displays in seconds that show how much is
left on the the green, and how much wait is left on the red. This is for
road users, not pedestrians as in the US.

Where I am in the US some of the major intersections have flashing amber
warning lights before the junction so that drivers know the light's
likely to have changed to red by the time they get to it; it's really
handy to have given how US traffic planners often prefer traffic
lights to slip-roads, so you do a lot of 65 - 0 - 65 driving...