Claim: Arnstadt Hauptbahnhof is serviced every two hours by the RE2, RB23, and RB (STB4).
Evidence: Arnstadt Hauptbahnhof or Arnstadt Central Station is a railway station in the town of Arnstadt in Thuringia, Germany. RE2 Every 2 hours RB23 Every 2 hours RB (STB4) Every 2 hours