quality:corruption
Konstablerwache station and Hauptwache station

Two other major downtown railway stations are Konstablerwache and Hauptwache, located on each end of the Zeil. They are the main stations to change from east-to-west-bound S-Bahn trains to north-to-south-bound U-Bahn trains. Konstablerwache station is the second-busiest railway station regarding daily passenger volume (191,000) after the central station. The third-busiest railway station is Hauptwache station (181,000).