Bundesautobahn
The German autobahns form the nationally coordinated motorway system in Germany. In German, they are officially called Bundesautobahn (plural Bundesautobahnen, abbreviated 'BAB'), which translates to "federal expressways". German autobahns have no general speed limit, but the advisory speed limit (Richtgeschwindigkeit) is 130 kilometres per hour (81 mph).
Read more about Bundesautobahn.