If you are using the Austrian Highways to reach Kitzbühel/Kirchberg you will require a highway pass - "Vignette". The vignette is available in any Petrol Station or Tabacconist.
On all Austrian highways a fluorecent safety vest must be worn if you exit your car whilst on the highway, for example in the case of breakdown.
By law, all cars must have either winter tyres fitted or alternatively carry snow-chains in the winter months (from 01.11 - 15.04)
Austrian speed limits on roads: outside of towns: 100 km/h, highways: 130 km/h, local area: 50 km/h (unless otherwise indicated)