Driving on motorways requires a VIGNETTE (toll sticker)
A vignette can be purchased at most petrol stations and at border entry points. 10-day Vignettes cost € 8.20 (2-month Vignettes cost € 24.20) and should be displayed on the internal side of the car's windscreen and permits travel on all motorways within Austria. This is strictly enforced by motoway patrols and failure to comply will result in on the spot fines. (Most hire cars will come with a vignette supplied.) More info about the Vignette