There is a recommended advisory speed ( Richtgeschwindigkeit ) of 130 km/h (80 mph) on unrestricted stretches.
The Autobahn is specifically engineered for high speeds, featuring long, gentle curves and high-quality pavement. Autobahn
Roads are constructed with thicker concrete or asphalt layers than standard highways to withstand the stress of high-speed travel. There is a recommended advisory speed ( Richtgeschwindigkeit