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The entire wiki reimagined as a visual magazine with video discovery · Watch your interests come alive
WikiVisually
The entire wiki reimagined as a visual magazine with video discovery · Watch your interests come alive
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Railway signalling
Videos
Railway signalling, or railroad signaling, is a system used to control the movement of railway traffic. Trains move on fixed rails, making them uniquely susceptible to collision. This susceptibility i
A Class 66 locomotive (right) is waiting at a red signal while a First Great Western (now Great Western Railway) passenger train (left) crosses its pa
A Class 66 locomotive (right) is waiting at a red signal while a First Great Western (now Great Western Railway) passenger train (left) crosses its path at a junction.
British lower-quadrant semaphore stop signal (absolute) with subsidiary arm (permissive) below
British lower-quadrant semaphore stop signal (absolute) with subsidiary arm (permissive) below
A block signal and a 130 km/h speed limit at kilometer post 547 in Iisalmi, Finland
A block signal and a 130 km/h speed limit at kilometer post 547 in Iisalmi, Finland
Railway infrastructure on the hill-country main line, Sri Lanka, including a gantry of semaphore signals
Railway infrastructure on the hill-country main line, Sri Lanka, including a gantry of semaphore signals
Signalling control
Videos
On a rail transport system, signalling control is the process by which control is exercised over train movements by way of railway signals and block systems to ensure that trains operate safely, over
Railway signalling
…result, accidents were common in the early days of railways. With the invention of the electrical telegraph, it became possible for staff at a station or signal box to send a message (usually a specific number of rings on a bell) to confirm that a train had passed and that a specific block was clear. This was called…
Class 66 at Bardon Hill signal box in Leicestershire, England. It is a Midland Railway signal box dating from 1899, although the original mechanical l
Class 66 at Bardon Hill signal box in Leicestershire, England. It is a Midland Railway signal box dating from 1899, although the original mechanical lever frame has been replaced by electrical switches. Seen here in 2009.
Signal box and tracks at Deval interlocking, Des Plaines, Illinois, USA, in 1993
Signal box and tracks at Deval interlocking, Des Plaines, Illinois, USA, in 1993
A mechanical lever frame inside the signal box at Knockcroghery in Ireland
A mechanical lever frame inside the signal box at Knockcroghery in Ireland
Trimley Junction IFS panel in the 1988 replacement signal box, built by BREL York
Trimley Junction IFS panel in the 1988 replacement signal box, built by BREL York