A British semaphore signal on the former Southern Region of British RailwaysBritish style "somersault" semaphore signals in Victoria, Australia
One of the earliest forms of fixed railway signal is the semaphore. These signals display their different indications to train drivers by changing the angle of inclination of a pivoted 'arm'.
Token • Train order operation • Centralized traffic control • Chinese Train Control System • Transmission Voie-Machine • European Train Control System • Radio Electronic Token Block • Automatic Block Signalling • Positive Train Control • Communication-based train control
Signalling control
Integrated Electronic Control Centre • Interlocking • Lever frame • Solid State Interlocking • Westlock Interlocking
Application of railway signals • Railway semaphore signal • Cab signalling • British railway signals • North American railroad signals
Train detection
Axle counter • Track circuit • Treadle
Train protection
Automatic Train Control • Automatic Train Protection • Automatic Warning System • Automatische treinbeïnvloeding • Balise • Continuous Automatic Warning System • Contrôle de vitesse par balises • EBICAB • Integra-Signum • Le Crocodile • Linienzugbeeinflussung • Pulse code cab signaling • Punktförmige Zugbeeinflussung • RS4 Codici • Sistema Controllo Marcia Treno • Slide fence • Train Automatic Stopping Controller • Train Protection & Warning System • Train stop
Organisations
AAR • AREMA • FRA • HMRI • IRSE • Transport Canada • UIC
By country
Australia • Belgium • Canada • Finland • France • Germany • Greece • Italy • Japan • Netherlands • North America • Norway • Sweden • Switzerland • United Kingdom