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Catch points and trap points are types of points which act as railway safety devices. Both work by guiding railway carriages and trucks from a dangerous route onto a separate, safer track. Catch points are used to derail vehicles which are out of control (known as runaways ) on steep slopes.
A right-hand railroad switch with point indicator pointing to right Animated diagram of a right-hand railroad switch. Rail track A divides into two: track B (the straight track) and track C (the diverging track); note that the green line represents direction of travel only, the black lines represent fixed portions of track, and the red lines depict the moving components.
Facing or trailing are railway turnouts (or 'points' in the UK) in respect to whether they are divergent or convergent. When a train traverses a turnout in a facing direction, it may diverge onto either of the two routes. When travelled in a trailing direction, the two routes converge onto each other. [1] [2] [3]
Washington Union Station in Washington, D.C., an example of a railway station A train station, a stopping point for trains, usually with passenger access Railway terminal A building for passengers at the end of a railway line Red A colour generally associated with stop, when shown by signals or flags Red zone
When a train has made a full brake application due to adverse event, or has lost its train air due to a defective valve (a "kicker"), or a broken air line or train separation. The train crew will normally declare that they are "in emergency" over the train radio, thus warning other trains and the dispatcher that there is a problem.
An electro-mechanical treadle. In railway signalling, a treadle is a mechanical or electrical device that detects that a train wheel has passed a particular location. They are used where a track circuit requires reinforcing with additional information about a train's location, such as around an automatic level crossing, or in an annunciator circuit, which sounds a warning that a train has ...
Britain’s second largest train operator is to deploy a new device to catch fare dodgers. Northern said it will use the technology at “known hotspots” across its network.
At a small number of locations on single track lines in Britain, interlaced loops had been provided where sprung catch points were required because of the steep gradient. [3] The points at either end of the loop were set according to the train's direction of travel. Trains running uphill were routed via the loop incorporating the sprung catch ...