Certain traffic lights in the UK have something like that. If you flash your lights (at night) as you approach they will change. It's sometimes used where a minor road crosses a major one. At night the lights are configured to stay green for the major road, until either: a) a vehicle is sensed waiting at the minor road's stop line; b) a flash of light detected from the direction of the minor road.

The crossing of the A60 into Rempstone is one such example.