From 1996 to 1998, the series was produced jointly by Polyphon Film- und Fernsehengesellschaft mbH (responsible for all other production aspects such as filming/postproduction/location scouting etc) and ActionConcept (stunts). Those episodes were shot in Berlin, Germany and in the surrounding state of Brandenburg. In 1998, Action Concept took over as the sole production company and shifted all filming/production work to its headquarters in Hürth just south of Cologne. Since then, episodes have been shot in and around Cologne and Düsseldorf as well as on several major Autobahnen (A44/A46 and now mainly on the Filmautobahn Aldenhoven by Düren -  between Cologne and Düsseldorf in the state of Northrhine-Westphalia (NRW).