Inauguration of Berlin S-Bahn electric service

August 6, 1912 saw the start of regular electric operations on Berlin's Stadtbahn line using 750 V DC third-rail power. The Prussian state railways introduced advanced motor coaches that replaced steam locomotives, dramatically increasing frequency and capacity for the growing metropolis. Engineers overcame challenges of integrating electrification with existing infrastructure while maintaining heavy freight traffic. This project showcased German technical prowess and influenced subsequent S-Bahn networks. The shift supported Berlin's rapid industrialization and population growth, establishing a template for integrated urban rail systems still in use today.