the proof of having paid the road toll for swiss highways is called
Vignette (road tax) Vignettes are used in Austria, Bulgaria, the Czech Republic, Hungary, Moldova, Romania, Slovakia, Slovenia and Switzerland. In most of these countries a small, coloured sticker is affixed to a vehicle windscreen, but in Hungary, Romania and Slovakia[1] these have been superseded by electronic vignettes. In Moldova and Romania vignettes are required for the use of any road, and in Bulgaria are required for the use of any road outside built-up areas. In the other countries vignettes are required only for the use of motorways and expressways.