In Austria, vignettes are compulsory on all motorways and expressways, with certain exceptions.
You can purchase vignettes and pay other tolls online or at normal points of sale (such as petrol stations) in Austria. Vignettes are available electronically or as classic paper stickers and are valid for 10 days, 2 months, or 1 year.
In addition, some tunnels or sections of road (e.g. on the A13) have tollgates where tolls are payable (in cash or by credit card) by the kilometre.