The e-matrica is a digital vignette matched to your plate, bought by county or nationwide. Speed enforcement is strict — cameras generally allow only 10 km/h over the posted limit before a fine.
County-only vignettes are cheaper if your whole route stays within one or two counties, but a nationwide sticker is simpler for a multi-day trip.
Studded tires are banned outright, not just restricted.
Fixed and mobile cameras generally only tolerate about 10 km/h over before issuing a fine.