automatic block signaling (Q1779202)
railroad communications system
Language:
Current Data About automatic block signaling
(P17) (Q142)

(P18) Image Provided By https://upload.wikimedia.org/wikipedia/commons/e/e4/CR_Lehigh-Line-signal-1222.jpg

(P31) (Q1316667)

(P279) (Q855591)

(P443) LL-Q150 (fra)-Jules78120-Block automatique lumineux.wav
(P407)
(P854) https://lingualibre.fr/wiki/Q2315

(P1813) "BAL" (language: fr)

"SBL" (language: pl)

other details
aliases ABS
 Automatic block signaling
description railroad communications system

External Links
(P646) /m/03c6dhf