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LIRR DEFINITIONS 1 - 64 QUESTIONS AND ANSWERS 100% SOLVED
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LIRR DEFINITIONS 1 - 64
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LIRR DEFINITIONS 1 - 64Block - answer A length of track of defined limits, the use of which is governed by block
signals, block-limit signals, automatic speed control or any combination thereof.
Absolute Block - answer A block established between block stations, block-limit
stations, interlockings or any combination thereof which must not be occupied by more
than one train except as provided by the rules
Automatic Block Signal System - answer A block signal system wherein the use of each
block is governed by an automatic block signal, the cab signal indicator or both
Block Signal System - answer A series of consecutive blocks
Manual Block Signal System - answerA block signal system wherein the use of each
block is governed by block signals controlled manually, by block limit signals or both,
upon information received by telephone, radio or other means of communication
Automatic Speed Control System - answerA system so arranged that its operation will
automatically result in the following:A full service application of the train brakes if, while
operating under a speed restriction, the speed of the train exceeds the predetermined
rate. The application will continue until the train is either brought to a stop or under the
control of the engineer, its speed is reduced to the predetermined rate.
Speed Controlled Train - answerA train equipped with the following speed control
apparatus: a cab signal indicator, sealed application valve or switch, audible warning
device and acknowledging switch, in operative condition for the direction in which it is to
move
Engine - answerA unit propelled by any form of energy, or a combination of units
operated from a single control used in road or yard service
Multiple Unit Equipment - answerEquipment capable of being propelled by electrical
energy through the use of third rail contact shoes
Track car - answerA roadway maintenance machine, not classified as an engine which
is operated on track for inspection or maintenance. It may not shunt track circuits or
operate signals and will be governed by rules and special instructions for trains other
than passenger trains
, Interlocking - answerAn arrangement of signals and signal appliances so interconnected
that their movements must succeed each other in proper sequence and for which
interlocking rules are in effect.
Interlocking Limits - answerThe tracks between the extreme opposing home signals of
an interlocking
Pilot - answerAn employee assigned to a train or track car when the engineer,conductor
or track car driver is not qualified on the physical characteristics or rules of the railroad
or portion of the railroad over which the movement is to be made
Aspect - answerThe appearance of a fixed signal which conveys an indication as
viewed from the direction of an approaching train; the appearance of a cab signal
indicator as viewed in the engine control compartment
Block Limit Signal - answerA fixed signal indicating the limit of the block, the use of
which is governed by manual block signal system rules
Block Signal - answerA fixed signal or hand signal in the absence of a fixed signal, at
the entrance to a block that governs trains using that block
Cab Signal Indicator - answerA signal indicator located in the engine control
compartment displaying the maximum speed for the movement of the train. It will be
used in conjunction with interlocking signals and either in conjunction with or in lieu of
block signals
Distant Signal - answerA fixed signal used to govern the approach to a home signal
Fixed Signal - answerA signal of a fixed location indicating a condition which affects the
movement of a train
Home Signal - answerA fixed signal that displays stop as its most restrictive aspect and
governs the entrance to a route or block
Indication - answerThe information conveyed by the aspect of a signal
Interlocking Signals - answerThe fixed signals of an interlocking
Marker - answerA highly visible marking device in the red-orange-amber color range,
affixed to the rear of the train to indicate that the train is complete
job Briefing - answerWhen reporting for duty, employees whose duties require
coordination with other employees must hold a job briefing to review operational and
safety conditions. If these conditions change, employees must hold an additional job
briefing to discuss the new conditions
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