We plan a road trip through Switzerland and we want to use walkie-talkies for the communication between the cars. We have devices that are using the PMR446 frequency and according to the manufacturer they are licence free in the EU. But what about Switzerland?
Yes, you can use PMR446 walkie-talkies in Switzerland.
Usage of PMR446 in Europe is licensed on a country-by-country basis and not mainly by the EU. You can get an up to date list of European countries allowing PMR446 usage and a summary of national deviations from the European Communications Office. Swiss federal authorities also have an information page confirming that usage of PMR446 devices is allowed.