In general, a very strange logic of work. It just says that there will be a camera, as it is in the base, we drive through it and if it is caught, it starts to squeak. You have to get used to it. In theory, if the same signature, then why notify? Maybe, of course, by the fact that I turned on the notification in any case, but this is so that he reports the camera despite my speed. Not always accurate information about the cameras either have already passed or have not reached, or shoots not in the back. But these are trifles. The main thing is that + - 50 meters. On the high-speed section around Hong Kong, where 130 is allowed, after 140 they yelled without stopping. Eventually it was turned off. Sometimes reacts to doors if you stand point-blank. Recently, at Lukoil, I turned it off while refueling. And on cars too, not often, but it reacts. Apparently not all signatures are in the database. But generally satisfied.