The light, which looks like a regular traffic light, is red when it’s at rest. Once a vehicle comes within range of its sensors, the light turns green to signal to the driver they’re respecting the speed limit. If they’re driving too fast, the light stays red, forcing them to slow down.
I actually kind of like this idea…
I think it’s a decent idea, but making it look like a friggin’ stoplight seems short-sighted.