Occasionally we will have an emergency services vehicle come through our work site, lights and siren going. Usually it is an ambulance. Obviously we get it through with all dispatch. We have often been warned by R/T or CB radio that one is heading our way, so we are ready for it. Radio communication is a wonderous thing. The other day one went through with the boss inside. We didn't know it at the time, but he had " taken a bit of a turn" at work and was packed off to hospital by the local nurse, who was taking no chances. Fortunately he was soon back with us and moaning about the suspension on the rather elderly local ambulance, and the state of the road. One of my daily reads, has a description of a lollipop person, or school crossing warden, who should be shot at dawn. You just never know when your turn may come, hopefully not as a result of a zipper problem ...