car:

From Germany:
Lindau motorway - Pfänder Tunnel - exit Dornbirn Nord - Bregenzerwald - Au

Kempten motorway - Immenstadt - Oberstaufen - Springen-Aach - Lingenau - Egg - Au.

Garmisch-Partenkirchen or Füssen - Reutte (Tirol) - Lechtal - Warth - Au

From Switzerland:
St. Gallen motorway - St. Margrethen/Au - Lustenau - Dornbirn - Bregenzerwald - Au.

From Austria:
Inntal motorway - Innsbruck - St. Anton - Arlbergpaß - Lech - Warth (during winter Arlbergtunnel - Dornbirn) - Au

Toll sticker required
A toll sticker is obligatory on Austrian motorways.
Stickers for 10 days, 2 months and one year are sold at Automobilclubs, gas stations, tobacconists and post offices.