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A right-hand railroad switch with point indicator pointing to right

Substitution track switch for rail at Chester Zoo

Cross Over Switch


This detail of a switch shows the pair of tapered moveable rails known as the switch points (switch rails or point blades)

A light industrial or yard track switch joint, where the points are joined to the closure rails by bolts through a "joint bar" or "fish plates"

A double switch, or double slip. The points are set to connect the upper left and lower right tracks.


A double switch, or double slip. The points are set to connect the upper left and lower right tracks. Apart from the standard right-hand and left-hand switches, switches commonly come in various combinations of configurations.
A dual gauge switch in Japan.

Dual gauge switches are used in dual gauge systems. There are various possible scenarios involving the routes that trains on each gauge may take, including the two gauges separating or one gauge being able to choose between diverging paths and the other not. Because of the extra track involved, dual gauge switches have more points and frogs than their single gauge counterparts. This limits speeds even more than usual.

A related formation is the 'swish' or rail exchange, where (usually) the common rail changes sides. These have no moving parts, the narrower gauge wheels being guided by guard rails as they transition from one rail to another. The wider gauge only encounters continuous rail so is unaffected by the exchange. At dual gauge turntables, a similar arrangement is used to move the narrow gauge track from one side to a central position.

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