Sorry this post if off topic just hoping some one can help with this question. I did try to solve the answer my self via web and news surfing (DIY link) but got no where.
On my route to and from work recently a number of loops have been installed in the road and a green box (which I presume they are connected to) with a tall green pole about the thickness of a drain pipe. Near the top of the pole the shaft narrows almost like there is room for something to go on top. I guess the pole is 8 foot height, so it won't be easy.
I think it to do with speed traps as the police regularly have their vans with cameras. The problem is I can't see any cameras. Is this another form of DS2 trap or just some harmless monitoring kit? I tried all the sped trap info sites but not similar kit shown
Once again sorry about being off topic.