Lirr study guide Exam Q’s and A’s
Block - -A length of track of defined limits, the use of which is governed by
block signals, block-limit signals, automatic speed control of any
combination thereof.
-Absolute Block - -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 - -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 - -A series of consecutive blocks.
-Manual Block Signal System - -A 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 (ASC) - -A 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 - -A train equipped with the following speed control
apparatus, a cab signal indicator, a sealed application valve or switch,
audible warning device and acknowledging switch, in operative condition for
the direction in which it is to move.
-Engine - -A 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 - -Equipment capable of being propelled by
electrical energy through the use of third rail contact shoes.
-Track Car - -A 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 - -An 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 - -The track between the extreme opposing home
signals of an interlocking.
-Pilot - -An 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 moment is to
be made.
-Aspect - -The appearance of a fixed signal which conveys and indication as
viewed from the direction of an approaching train; the appearance of the cab
signal indicator as viewed in the engine control compartment.
-Block-Limit Signal - -A fixed signal indicating the limit of the block, the use
of which is governed by manual block signal system rules.
-Block Signal - -A fixed signal or a hand signal in the absence of a fixed
signal, at the entrance to a block that governs trains using that block.
-Cab Signal Indicator - -A 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 - -A fixed signal used to govern the approach to a home
signal.
-Fixed Signal - -A signal of a fixed location indicating a condition which
effects the movement of the train.
-Home Signal - -A fixed signal that displays Stop Signal as it's most
restrictive aspect and governs the entrance to a route or block.
-Indication - -The information conveyed by the aspect of a signal.
-Interlocking signals - -The fixed signals of an interlocking.
-Marker - -A 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.
-Foul Time - -A method of establishing working limits on a main track,
secondary track or siding in which a roadway worker is notified by the Train
Dispatcher through the Block Operator that no trains will operate within the
working limits established on the track until the roadway worker reports
clear of the track.
-Inaccessible Track - -A method of establishing working limits on tracks not
controlled by the Train Dispatcher or Block Operator by physically
preventing the entry and movement of tracks.
Block - -A length of track of defined limits, the use of which is governed by
block signals, block-limit signals, automatic speed control of any
combination thereof.
-Absolute Block - -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 - -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 - -A series of consecutive blocks.
-Manual Block Signal System - -A 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 (ASC) - -A 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 - -A train equipped with the following speed control
apparatus, a cab signal indicator, a sealed application valve or switch,
audible warning device and acknowledging switch, in operative condition for
the direction in which it is to move.
-Engine - -A 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 - -Equipment capable of being propelled by
electrical energy through the use of third rail contact shoes.
-Track Car - -A 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 - -An 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 - -The track between the extreme opposing home
signals of an interlocking.
-Pilot - -An 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 moment is to
be made.
-Aspect - -The appearance of a fixed signal which conveys and indication as
viewed from the direction of an approaching train; the appearance of the cab
signal indicator as viewed in the engine control compartment.
-Block-Limit Signal - -A fixed signal indicating the limit of the block, the use
of which is governed by manual block signal system rules.
-Block Signal - -A fixed signal or a hand signal in the absence of a fixed
signal, at the entrance to a block that governs trains using that block.
-Cab Signal Indicator - -A 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 - -A fixed signal used to govern the approach to a home
signal.
-Fixed Signal - -A signal of a fixed location indicating a condition which
effects the movement of the train.
-Home Signal - -A fixed signal that displays Stop Signal as it's most
restrictive aspect and governs the entrance to a route or block.
-Indication - -The information conveyed by the aspect of a signal.
-Interlocking signals - -The fixed signals of an interlocking.
-Marker - -A 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.
-Foul Time - -A method of establishing working limits on a main track,
secondary track or siding in which a roadway worker is notified by the Train
Dispatcher through the Block Operator that no trains will operate within the
working limits established on the track until the roadway worker reports
clear of the track.
-Inaccessible Track - -A method of establishing working limits on tracks not
controlled by the Train Dispatcher or Block Operator by physically
preventing the entry and movement of tracks.
