text: looking at that node history https://www.openstreetmap.org/node/3551332781/history seems like marco69 is the one you should ask to.
  
  Generally speaking, in Italy it happens to see some (wannabe speed cameras) high visibility boxes few meters off the road. Often those are "fake speed cameras", as they do not contain any camera, their goal is to deceive drivers and let them stay in within the speed limit.
  See this one https://www.varesenews.it/photogallery_new/images/2017/03/dissuasori-velook-autovelox-597866.610x431.jpg
  
  It also happens that police has just one camera and 5 boxes like that, in that case it may happens that the camera stays one week inside box 1, then it gets moved to another box and so on.