Brenner Railway is situated at the border between Italy and Austria and also the operational border between the ÖBB and FS networks. The two companies operate different electrical systems, (15,000 V AC at 16.7 Hz in Austria, and 3,000 V DC in Italy), which requires a stop to change electric locomotives. For this reason, for a long time the operation of express trains from Munich to Verona and Milan was carried out with diesel railcars. Until 30 May 1965 was also needed a second engine change in Bolzano station, as the Bolzano–Brenner section still operated under three-phase AC electrification. In recent years
Brenner Pass to the German word for somebody who clears woodland. A name for the pass itself appears for the first time in 1328 as "ob dem Prenner" (German for "above the Prenner"). The Romans regularised the mountain pass at Brenner, which had already been under frequent use during the prehistoric eras since the most recent Ice Age. Brenner Pass, however, was not the first trans-Alpine Roman road to become regularised under the Roman Empire. The first Roman road to cross the Alpine range, Via Claudia Augusta, connected Verona in northern Italy with Augusta Vindelicorum (modern-day Augsburg) in the Roman province of