@No6671
but for Switzerland my comments are the only only one you can get and which you can use
Any offer for radar warner and sell is illegal, because the ownership is unleagel. Therefore the big player for navigation equipment has taken off radar databases from Switzerland from their tools.
Only „spezialised“ radar Apps may have databases for Switzerland and tells you „ownership and use is your risk“, because their registerd office is out of Switzerlands prosecution.
I know that Switzerland gives fines for speeding for one (1) km/h but they have also a tolerance like other countries of 3. So you must ride with your bike (or car) minimum 4 km/h over limit, not respecting additional variation of your speedometer of about 2-3 with todays electronic systems.
In Germany by practise, most communes with fix radars and police checks set the limit at 9 km/h for fines, so that you get a letter or ticket with minimum measured 6 km/h.
I red few years ago a comment of a swiss policeman. If we gave you 5 as tolerance we have signs with 5 km more.
As often as possible I use on my car the cruise control her in Germany with plus 5 and when I enter switzerland with +/-0.
And in Switzerland no one is in your back and press you to drive faster.