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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.
The second type of derail is the "split rail" type. [7] These are basically a complete or partial railroad switch which directs the errant rolling stock away from the main line. This form is common throughout the UK, where it is called trap points or catch points. Split rail type derail on the A&M in Rogers, Arkansas
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.
A derailed British Rail Class 165 at London Paddington station. The train moved over a set of catch points which caused the derailment. After derailing, the rear of the train hit an overhead line stanchion, severely damaging the driver's side of the front coach.
Some railways fit catch points at the ends of crossing loops so that if a train overruns the loop, it is derailed rather than collide with an opposing train. Since the available space for crossing loops is usually limited, they do not normally have an overlap (safety margin) between the starting signals and the end of the double line.
The rear portion runs away, pushing the banking locomotive downhill where it is derailed by catch points. [1] March 14 – United States – Bellows Falls, Vermont [2] The crew of a southbound freight incorrectly reads the train order, confusing "Bartonsville" for "Bellows Falls".
An insulated track circuit interrupter fitted to trap points. A track circuit interrupter may be fitted at catch points, trap points or buffer stops to maintain a track circuit in the 'occupied' state in the event of a derailment. The track circuit remains de-energised until the interrupter is replaced.
improving the overall railroad delivery system across interchange points, regions, and yards. [1] In response to pressures for standardization, the railroads governed by both NORAC and GCOR recently hired consultants to rewrite and reorganize their operating rulebooks.