East Berlin’s Reichsbahn operates West Berlin’s S-Bahn network. That means Reichsbahn owns all tracks and stations in the West, and employs all S-Bahn staff regardless of which side of the Wall they work on. West Berlin Reichsbahn employees go on strike in September 1980. They want better wages and working conditions. The Reichsbahn management won’t negotiate, so freight trains and the S-Bahn come to a halt and workers occupy signal boxes.