In cooperation with the neighboring regions of Italy and Switzerland, Tirol promoted itself as one tourism region: Terra Raetica . The website contains a solid chapter of barrier-free tourism, with information about accommodation, sports, activities, restaurants, cafes, culture and nature. The wheelchair accessibility rate is indicated by 1 to 3 wheelchair symbols. So note: one wheelchair symbol is a low score here! You’ll get a lot of extra explanation, with dimensions and pictures. About other types of thresholds, for people with other constraints, we found no specific explanation. The information is available in German and Italian.
https://www.terraraetica.eu/de/humana-raetica/barrierefrei.html