In Stockholm, we have 2 sets of sensors dug : 1. induction coil sensor dug in road at the traffic light 2. radar sensor at 100-200m from the traffic light It

In Stockholm, we have 2 sets of sensors dug : 1. induction coil sensor dug in road at the traffic light 2. radar sensor at 100-200m from the traffic light It feels like magic because if you hit sensor (2) and there are no other competing cars, the traffic light changes for you and you don't have to slow down. This is the best solution. In Dublin, they only have sensor (1) and it feels really slow in comparison. You keep having to stop and start.