Hiking trails (yellow) are generally accessible and usually intended for people walking. Hiking trails do not have special requirements. The signposting of the hiking trails is yellow.
Mountain hiking trails (white-red-white) are hiking trails that partly open up impassable terrain. Users of mountain hiking trails must be sure-footed, free from giddiness, in good physical condition and aware of the dangers in the mountains (rockfall, danger of slipping and falling, weather upheaval). The signposts are yellow with white-red-white tops, the markings are white-red-white.
Alpine hiking trails (white-blue-white) are demanding mountain hiking trails. Alpine hiking trails must be sure-footed, free of vertigo and in very good physical condition. They must also be able to handle ropes and ice axe as well as climbing with the aid of your hands. The signposts are blue with white-blue-white tips, confirmations and markings are white-blue-white.