We need those on our bus street on Lidingö. Many cars use it. And since they don't know our signalling (all three openings white with different symbols, S, - and |, they pass the traffic lights in stop. Or they stop but at the lights, not at the sign "Stop, signal" wich means they're in the way for us when we turn in to the street.
But we have a gate that opens for buses though, but not on that street.
Nice to see by the way