On a road bridge near my place is a digital indication board that tells motorists if they are speeding. Most that are speeding slow down on the bridge so that by the time they pass the sign they have dropped below the 50 km/h limit. But I can't see the city council fully embracing this apparently effective method. It is obviously addicted to the revenue from photo radar tickets. Just before the bridge is a corner where the photo radar guys like to set up. There is a tiny sign with the speed limit on it just before the spot. A while back the photo radar guys vanished. I looked and the speed limit sign was bigger. Then they came back. I looked again and the tiny sign was back. I've had two speeding tickets. Both times I had to go back and hunt for the signs. With one a driver would have to ignore the traffic he or she was merging with to see it on the "wrong" side of the road. The other is often masked if there are two buses at the stop. And let's not forget the blindness. The radar trucks like to park next to the pavement in the dark. Imagine as a pedestrian getting a giant size flash bulb able to capture the number plate of a speeding car going off right in the face. But then you try to prove in 15 years' time that your loss of vision was caused by a photo radar unit.