Dual Control Switch
A power-operated switch, also equipped for hand operation.
Dual Gauge
A mixed track gauge, often seen at interchange points between standard gauge and narrow gauge railroads.
Dual control switch
Track switch that can be operated remotely by a dispatcher or hand-thrown.
Dual-mode ...
Dual Control Switch
A power operated switch or derail that can also be operated by hand.
Dump Car ...
Power operated or dual control switches are normally equipped with some type of heater to melt off snow and ice. However, just like locomotives, those heaters are not fueled with air. Usually the heaters are fueled with natural or LP gas.
Controlled signals protect mainly dual control switches and are controlled by an interlocking and is under direct control by the dispatcher. A CTC interlocking location is often referred to as a Control Point (CP).
Dual Control Switch A power-operated switch, also equipped for hand operation. Dummy A small auxiliary signal used to control unusual movements such as a set back into a yard from a main line.
 See also: Track, Point, Engine, Switch, Train
  
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