A highway strip, road runway or road base is a section of a highway, motorway or other form of public road that is specially built to act as a runway for (mostly) military aircraft and to serve as an auxiliary military air base. These runways allow military aircraft to continue operating even if their regular air bases, some of the most vulnerable targets in any war, are degraded or destroyed.
A Lockheed C-130 Hercules lands on the German Bundesautobahn 29 (A29 Autobahn) near Ahlhorn during military exercise 'Highway 84'