I noticed some new road-furnature on the way up the A3 at the Esher junction today. It consists of bitumen markings in each lane, much like those used to sense vehicles approaching traffic lights, but a little more complex. On the verge next to these markings is a pole with a solar panel mounted at the top, and I _think_ I saw something that could have been an aerial. All of this is new. I know someone who got pulled over last night just after these, and he says the police appeared out of nowhere - maybe hiding under the bridge of the junction or on the sliproad. I can't find any info online about these markings - anyone noticed similar/ heard anything? Is it possible it's something they can "jack into" and get a reading on people's speed?