Cab Signal
A signal that is located in the engine control compartment which indicate track occupancy or condition. The cab signal is used in conjunction with interlocking signals, and with or in lieu of block signals.
Cab Signaling ...
Cab signal
Signal located in a locomotive or operating cab that indicates the conditions affecting train movement. Can be used in conjunction with, or in place of, lineside block signals.
Cab unit ...
Cab Signals
Lights on a control panel in front of the engineer which indicate the condition of the track ahead of his train.
Cab-Forward ...
Cab Signal
A device located in the cab of a locomotive which indicates the condition of the track ahead, whether clear or occupied, by a display of signals.
Cabin Car ...
Main article: Cab signalling
Some locomotives are equipped to display cab signals. These display signal indications through patterns of lights in the locomotive cab.
Some railroads have cab signal and even remote control systems as part of their hump engines. The Louisville & Nashville had such a system in place in the 1980's at Osborn Yard in Louisville, KY.
Automatic Block Signal System (ABS) A series of consecutive blocks governed by block signals, cab signals or both, actuated by a train, engine or by certain conditions affecting the use of a block.
ARU American Railway Union, Crushed during the Pullman strike in 1894 Automatic Block Signal System (ABS) A series of consecutive blocks governed by block signals, cab signals or both, actuated by a train, ...
These signals are interpreted by the on-board cab signal equipment to control train speed. Provisions are usually provided to allow system override to allow a train to bypass a red/stop signal with authorization from the control center.
The installation includes automatic line side signals, cab signals or both, actuated by a train or light engine by means of axle counters or track circuits. This is a very basic form of automatic route setting (ARS) UoS.
Cab Signal A signal located in engineer's compartment or cab, indicating a condition affecting the movement of a train or engine and used in conjunction with interlocking signals and in conjunction with or in lieu of block signals.
The manipulation of automatic and/or cab signals and power operated switches from a central location where signals supersede the superiority of trains.
Circuit, track.
Semaphore signals have been largely replaced by modern coloured light signals and in-cab signal indications.
A series of consecutive blocks governed by block signals, cab signals, or both, actuated by a train or engine, or by certain conditions affecting the use of a block.
Automatic Brake Valve ...
CTC-Centralized Traffic Control. The manipulation of automatic and/or cab signals and power operated switches from a central location where signals supersede the superiority of trains.
Automatic Warning System (UK): Refers to the specific form of limited cab signalling introduced in 1948 in the United Kingdom to help train drivers observe and obey warning signals.
 See also: Track, Current, Engine, Switch, Operation
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