South Tyrol One of the most important highways is the A22, also called the "Autostrada del Brennero". It connects to the Brenner Autobahn in Austria. The vehicle registration plate of South Tyrol is the two-letter provincial code Bz for the capital city, Bolzano. Along with the autonomous Trentino (Tn) and Aosta Valley (Ao), South Tyrol is allowed to surmount its license plates with its coat of arms. Rail transport goes over the Brenner Pass. The Brenner Railway is a major line connecting the Austrian and Italian railways from Innsbruck and Verona climbing the Wipptal, passing over the Brenner Pass and descending down
Brenner Pass Counts of Tyrol within the Holy Roman Empire. Emperor Frederick Barbarossa made frequent uses of the Brenner Pass to cross the Alps during his imperial expeditions of Italy. The 12th-century Brenner Pass was a trackway for mule trains and carts. Modernisation of Brenner Pass started in 1777, when a carriage road was laid out at the behest of Empress Maria Theresa. Modernisation further took place under the Austrian Empire and the Brenner Railway, which was completed in stages from 1853 to 1867. It became the first trans-Alpine railway without a major tunnel and at high altitude (crossing Brenner Pass at