Autobahns of Austria
Unlike German autobahns, on Austrian autobahns a general speed limit of 130 km/h (81 mph) is set, although as of August 25, 2018, the FPÖ government has been going on a trial for a possible speed limit increase to 140 km/h (87 mph) on the Autobahn 1 freeway. They may only be used by powered vehicles that are designed to achieve at least . While on the motorway voluntary stops, U-turns and backward driving are prohibited.
Bundesautobahn 99
The Aubinger Tunnel is Bavaria's longest motorway tunnel with its 1956 meters. It has been honored by the ADAC as one of the safest tunnels. The tunnel also has one of the most modern speed control systems in Europe. The measurements have been made in both directions since the beginning of March 2008, without the drivers noticing. Every 500 meters after the entrance, measuring points are set up in both directions, which forward the measured data directly to the police. In the first week after its launch, more than 1,500 speeding violations have been registered, according to press releases.