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Railway signalling (BE), or railroad signaling (AE), is a system used to control the movement of railway traffic. Trains move on fixed rails , making them uniquely susceptible to collision . This susceptibility is exacerbated by the enormous weight and inertia of a train, which makes it difficult to quickly stop when encountering an obstacle.
This advanced system features modern signaling with virtual blocks and Automatic Train Operation (ATO) functionality over an LTE backbone. A standout feature of the RRTS is the interoperability across all corridors, enabled by ETCS Level-2. The system monitors train speed and direction while providing operational directives via a radio block ...
The US and Canada departed from UK practice wherein a semaphore blade is devoted to each route (Route Signaling). General North American practice is to group routes by speeds and use a single blade for, say, "medium speed" regardless of the number of routes involved (Speed Signaling). The primary exception to this situation is in the field of ...
Once a route is set and a train is given a signal to proceed over that route, all switches and other movable appliances in the route are locked in position until either the train passes out of the portion of the route affected, or; the signal to proceed is withdrawn and sufficient time has passed to ensure that a train approaching that route ...
In the simplest case with three signal boxes on a stretch of line without junctions, the central of the three boxes will receive a request for a train to be accepted, the signaller will set any relevant points (turnouts) and signals and signal acceptance, and then request acceptance by the next signal box along the line. When the train has ...
The first full-scale implementation of TASC was on the Tokyo Metro Ginza Line, the oldest subway line in Japan, where it, along with a new CS-ATC cab signalling system, replaced the line's previous mechanically-operated automatic train stop (ATS) system in 1993, [1] enabling a massive upgrade of the line's route capacity and frequency between ...
An official probe into India's rail crash is focusing on suspected manual bypassing of an automated signalling system that guides train movement - an action investigators believe sent a packed ...
Primarily, Kavach works on the principle of continuous supervision of the movement authority and is designed to maintain train speed within the specified limits and can automatically apply brakes to slow down or to bring the train to a complete standstill, in case the Loco Pilots violates the speed restrictions or fails to act in time to prevent Signal Passed At Danger (SPAD); thereby reducing ...