Post Plates

Post plates determine the rules that apply when a signal has failed.
Most signals carry a post plate mounted on the signals post below the signal head.

Main Signal Post Plates
Mastschild weiß-rot-weiß  Train movements may pass a stop signal at danger or a defective main signal only if aspect Zs 1, Zs 7, or Zs 8 is displayed, or signalman hands over (or dictates) a written permission to do so. If Zs 12 is displayed, a verbal permission by signalman is also ok. Shunting movements may pass it by a verbal permission. Used for entrance, exit, and protecting signals, or automatic block signals covering level crossings or sidings.
Mastschild weiß-gelb-weiß-gelb-weiß  Same procedure as post plate white-red-white. But if driver is unable to communicate with signalman, train may pass the signal and may proceed on sight until next main signal.

Used for automatic block signals.

Mastschild weiß-schwarz-weiß-schwarz-weiß  Used only on Berlin and Hamburg urban railway lines for (semi-) automatic block signals. After stopping, train may proceed without permission when at danger or defective. Proceeding on sight applies until next main signal.
Mastschild rot  Used in Berlin S-Bahn only: Urban railway lines for some entrance or exit signals on lines with automatic block equipment. Same procedure as post plate white-red-white, but after train has obtained signalman's permission to pass the signal (or after aspect Zs 1 was cleared) train must proceed on sight until next main signal. Shunting movements may pass it by a verbal permission when at danger or defective.
On the Augsburg-Donauwörth line only:
Identifies a Sk main signal.
Mastschild weiss mit 2 schwarzen Punkten  Train movements may pass the protecting signal at danger only if signalman hands over or dictates a written permission. Extinct protecting signals are not valid for train movements.
M-Tafel  This is not regarded a post plate but is the subsidiary signal Zs 12. See "M Board" at the subsidiary signals page.
Distant Signal Post Plates
Vorsignaltafel  Supplemental signal Ne 2. Identifies a distant signal. When used with Hp Hl or Ks signals identifies a distant-only signal.
Vorsignaltafel mit Abstandsdreieck  Used only with semaphore distant signals in West Germany (DB): main signal is at reduced distance.
Vorsignaltafel mit Kreis (DR)  Used only with distant signals in East Germany (DR) (semaphore and Hl as well): main signal is at reduced distance.
Mastschild für Vorsignal-Wiederholer  East Germany (DR) only: Identifies an Hl distant signal repeater.
Other Post Plates
Mastschild für Ks-Hauptsignal  [Obsolete]
Formerly used to identify a Ks main signal. Now, the white-red-white plate is used instead.
Mastschild für Ks- oder Hl-Vorsignal  Used below a white-red-white plate to identify a Ks or Hl combined signal. Was previously also used alone to identify a Ks distant-only signal. Now, in such cases the distant signal plate is used.

Mastschild für Bü-Signal  Identifies a signal protecting level crossings.
Mastschild für Sk-Vorsignal  This is an Sk distant signal (Augsburg-Donauwörth line only).
Mastschild für Sk-Kombinationssignal  This is a Sk combined signal (Augsburg-Donauwörth line only).
Zs 103 (DR)  (This is not a post plate, but DR's subsidiary signal Zs 103, see there)