The Verein zur Vorbereitung der Autostraße Hansestädte–Frankfurt–Basel (English: Association for the preparation of the motorway Hanseatic cities–Frankfurt–Basel), commonly referred to as HaFraBa, was an organization dedicated to developing one of the first large Autobahn projects in Germany.
The association was founded on November 6, 1926 as "Verein zum Bau einer Straße für den Kraftwagen-Schnellverkehr von Hamburg über Frankfurt a.M. nach Basel" (English: Association for the building of a road for the automobile fast-moving traffic from Hamburg over Frankfurt to Basel) by Robert Otzen.
[1] On May 31, 1928 the association was renamed as the Verein zur Vorbereitung der Autostraße Hansestädte–Frankfurt–Basel to include the Hanseatic cities of Bremen and Lübeck into the planning.
In 1930, for each city, detailed plannings of the linkage to the Hafraba was presented in summaries subtitled "Städte an den Hafrabastraßen" (English: Cities on the roads of Hafraba) by J. F. Amberger (Heidelberg), Adolf Elsaesser (director of urban planning of Mannheim), Theodor Krebs (Darmstadt), Maurer (Mainz), Rehorn (chief of traffic of Kassel) and Carl Thalenhorst (senator of building authorities of Bremen) in the newspaper Hafraba-Mitteilungsblatt.
The name of the association was later changed to Gesellschaft zur Vorbereitung der Reichsautobahnen (English: Society for the Preparation of the Autobahnen of the Third Reich).