Nichraucher, no smoking, warns the letters on the side of this HSB personenwagen stopped at Drie-Annen-Hohne. The lettering on the platform reads:  "Beim Übergang festhalten Auf den Übergängen nich aufhalten". Google's translation reads:  "During the transition hold on the transitions stay nich". Don't hold onto the chains when crossing between cars? I'm guessing... anyone know?