Obligatory warning: check your local laws regarding dashcams. They are not legal everywhere and some countries impose very severe fines on using them.
Switzerland has it in a grey area. You certainly can't publish the videos on YouTube, but it could be examined by the police.
It's certainly a net positive on society to allow dashcams, since it resolves ambiguity around liability.
https://www.oeamtc.at/thema/vorschriften-strafen/zulaessigke...
> Any form of systematic surveillance is prohibited. So recording anything that happens in front of the lens - without any other primary purpose - is classified as surveillance activity. This activity is reserved for the state.
You can still use a Ding, but it can only point at your private property and you have to inform people who may enter your property that it's being recorded.
I believe in certain extreme cases some courts in Switzerland did permit such footage in court.
Apropos, not related, but after the war victims of holocaust often recognized their tormentors from TV or from newspapers.
https://www.dw.com/en/dashcams-in-germany-permissible-in-cou...
Austria is supposedly completely illegal, but unless the police there will stop you for having one, I'd probably risk it. Perhaps courts wouldn't admit it as evidence, but insurance arbitration might, or it might at lease avoid an insurance fight altogether.
Showing your footage to an insurance company would make them obligated to report you to the police.