Historically an uninterrupted Autobahn, one final  section was added between Sembach and Kaiserslautern at the current site of the Dreieck Kaiserslautern/KL-Zentrum Ausfahrt.
Historically a continuous Autobahn, one final part was added between Sembach and Kaiserslautern at the present location of the Dreieck Kaiserslautern/KL-Zentrum Ausfahrt.