Transportpolizei

The Transportpolizei (German for "Transport Police", sometimes known as Trapo) was the transit police of the German Democratic Republic (East Germany), whose officers were commonly nicknamed TraPos. It was part of the Volkspolizei and dealt with all modes of transit, but primarily with trains and railroads. It supervised all larger train stations and controlled the travellers, particularly at the border with West Germany, and directed traffic.

Before the building of the Berlin Wall, the Transportpolizei controlled the S-Bahn in West Berlin (as the Deutsche Reichsbahn controlled the S-Bahn in both East and West Berlins). In the 'interzone courses' (later called 'transit courses'), there was always an escort party of the Transportpolizei present. The service training school of the Transportpolizei was in Halle.