FIXED SIGNAL"Derisive term for a student brakeman standing on a boxcar with his lamp out and a cinder in his eye
FLAG"Assumed name. Many a boomer worked under a flag when his own name was black-listed ...
Fixed Signal
A signal at a fixed location that affects the movement of a train.
Flag ...
Fixed Signal
A signal of fixed location indication a condition affecting the movement of a train or engine.
Flag ...
A fixed signal used in conjunction with one or more signals to govern the approach thereto.
Appurtenance ...
Board
A fixed signal.
Bobber
A short, four-wheel caboose.
Bobtail Haul
Early slang expression indicating that a locomotive was pulling only a few cars and a bobber caboose; a short train.
Block signal. A fixed signal at the entrance to a block, to govern trains and engines entering and using the block.
Block station. A place at which block signals are located and from where they may be operated.
Interlocking Signals The fixed signals of an interlocking, governing trains using interlocking limits. Intermodal Freight traffic that refers to containerization of freight for easy transloading to different modes of transportation.
Semaphore - Type of fixed signal with a pivoted arm which can be raised or lowered as required.
Semi-Conductor - Material used in electric traction rectifiers, whose electrical resistance depends on the direction of the applied voltage.
Color Light Signal A fixed signal in which the indications are given by the color of a light only. Color-Position Light Signal A fixed signal in which the indications are given by color and position of two or more lights.
handsignals - used mainly where there are no fixed signals or where the fixed signalling has failed. Generally, each railway has its own defined handsignals recognised by its operators.
They may be conveyed from a fixed signal such as a block or interlocking signal or a stop sign of fixed location.
 See also: Engine, Train, Track, Crew, Block
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