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Railway Signaling Systems
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Signals
Display information about the state of the track ahead to drivers.
Track Circuits
Detect the presence of a train and convey occupancy information.
Point Machine
Operates railway switches to control the direction of the train.
Axle Counter
Keeps track of the number of axles passing a certain point to identify train presence.
Interlocking
Ensures only safe routes are set for train movements.
Block Section
A section of track that is a single signaling block to prevent train collisions.
Train Stop
A device that automatically stops a train if it passes a signal at danger.
Signal Box
The location from where signals and points are controlled.
Cab Signaling
Provides signaling information directly inside the driver's cab.
Automatic Train Control (ATC)
Automatically regulates the speed of the train and enforces signals.
Level Crossing Signals
Warns road users of an oncoming train at level crossings.
Derail
A safety device that intentionally derails a train if it passes a signal at danger.
Balise
A transponder placed on the track, used in European Train Control System (ETCS) to give position and speed limits to trains.
European Train Control System (ETCS)
A standardized trackside train control system designed to replace the many incompatible safety systems across Europe.
Train Detection System
Detects the presence, absence, or passing of trains.
Radio Block Centre (RBC)
A component of ETCS that manages train movements and ensures safe separation on the track.
Train Protection & Warning System (TPWS)
A system designed to automatically stop a train if it passes a red signal or overspeeds at a particular location.
Dead-man's Switch
A safety device that automatically stops the train if the driver becomes incapacitated.
Automatic Train Protection (ATP)
Prevents trains from passing signals at danger and ensures adherence to speed limits.
Train Event Recorder (Black Box)
Records data about the train's operation, to be analyzed in case of accidents or incidents.
GSM-R
A radio system for railway communication and applications.
Railway Signal Engineer
Designs, implements, and maintains railway signaling systems.
Safety Integrity Level (SIL)
Measures the relative level of risk reduction provided by a safety function.
Vital Relay
A type of relay used in safety-critical applications to switch tracks, signals, and other equipment.
Token Block System
A system used to ensure only one train is in a section of single track at any one time.
Positive Train Control (PTC)
An advanced system designed to automatically stop or slow down a train to prevent collisions and derailments.
Train Berth
A track area where a train is authorized to be detected or stationed.
Electrical Track Gauge
Measures the tread and flangeway clearances as well as track and turnout geometry.
Speed Signaling
Conveys speed restrictions to the train driver, either by trackside signs or cab signals.
Junction Indicator
Provides direction guidance for drivers at track junctions and complex route settings.
Train Registration Number
A unique number assigned to each train to identify and track it through the signaling system.
Emergency Stop Plunger
Allows personnel or passengers to stop trains at stations in case of emergency.
End of Train Device (EOT)
A device placed on the last car of a freight train to monitor brake line pressure and communicate with the locomotive.
Shunting Signal
Controls the movement of trains performing shunting (switching) movements.
Train Dispatch System
A system used to manage train operations and ensure timely and efficient movement of trains.
Train Destination Sign
Displays the train's destination and other passenger information.
Fixed Train Termination Point
The designated area where a train service is officially scheduled to end.
Passenger Information Systems (PIS)
Provides real-time information to passengers about train times, delays, and platform changes.
Rail Traffic Controller
Oversees train movements and manages the routing of trains on the railway network.
Trackside Monitoring Equipment (TME)
Used to collect data about the condition of the track and passing trains for maintenance and safety purposes.
Railroad Crossing Warning System
Alerts drivers and pedestrians of an approaching train at a railroad crossing.
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