LIRR Definitions Exam Questions and Answers
WORKING LIMITS - -A segment of track with definite boundaries upon
which trains may move only as authorized by the roadway worker in charge
of that segment of track.
-AUTOMATIC SPEED CONTROL SYSTEM - -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.
-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 movement is
to be made.
-SPEED CONTROLLED TRAIN - -A train equipped with the following speed
control apparatus: 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.
-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.
-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.
-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.
-MULTIPLE UNIT EQUIPMENT - -Equipment capable of being propelled by
electrical energy through the use of the third rail contact shoes.
-STATION - -A place designated by name on the station pages of the current
timetable.
-INTERLOCKING SWITCH - -A switch within interlocking limits controlled
by the Block Operator or Train Dispatcher working in conjunction with
interlocking signals and other interlocking appliances.
, -BLOCK-LIMIT STATION - -A place at which a block-limit signal is
displayed.
-AUTOMATIC SAFETY SWITCH - -A switch identified by a yellow switch
stand. Trains may make trailing point moves through the switch without
previously aligning it by hand. Except as specified by Timetable Special
Instruction.
-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.
-INTERLOCKING LIMITS - -The tracks between the extreme opposing home
signals of an interlocking.
-ASPECT - -The 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 - -A fixed signal indicating the limit of the block, the
use of which is governed by manual block signal system rules.
-FIXED SIGNAL - -A signal of a fixed location indicating a condition which
affects the movement of a train.
-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.
-MARKER - -A highly visible marking device in the red-orange-amber color
range, affixed to the rear of a train to indicate that the train is complete.
-MAXIMUM AUTHORIZED SPEED - -The highest speed that is permitted
over a specific portion of the railroad. It may be authorized by the special
instructions of the current timetable, Rules of the Operating Department or
any other publication authorized by the General Superintendent-
Transportation.
-BLOCK SIGNAL - -A fixed signal or hand signal in the absence of a fixed
signal, at the entrance of a block to govern trains using that block.
-INDICATION - -The information conveyed by the aspect of a signal.
-HOME SIGNAL - -A fixed signal which displays stop as it's most restrictive
aspect and governs the entrance to a route or block.
WORKING LIMITS - -A segment of track with definite boundaries upon
which trains may move only as authorized by the roadway worker in charge
of that segment of track.
-AUTOMATIC SPEED CONTROL SYSTEM - -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.
-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 movement is
to be made.
-SPEED CONTROLLED TRAIN - -A train equipped with the following speed
control apparatus: 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.
-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.
-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.
-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.
-MULTIPLE UNIT EQUIPMENT - -Equipment capable of being propelled by
electrical energy through the use of the third rail contact shoes.
-STATION - -A place designated by name on the station pages of the current
timetable.
-INTERLOCKING SWITCH - -A switch within interlocking limits controlled
by the Block Operator or Train Dispatcher working in conjunction with
interlocking signals and other interlocking appliances.
, -BLOCK-LIMIT STATION - -A place at which a block-limit signal is
displayed.
-AUTOMATIC SAFETY SWITCH - -A switch identified by a yellow switch
stand. Trains may make trailing point moves through the switch without
previously aligning it by hand. Except as specified by Timetable Special
Instruction.
-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.
-INTERLOCKING LIMITS - -The tracks between the extreme opposing home
signals of an interlocking.
-ASPECT - -The 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 - -A fixed signal indicating the limit of the block, the
use of which is governed by manual block signal system rules.
-FIXED SIGNAL - -A signal of a fixed location indicating a condition which
affects the movement of a train.
-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.
-MARKER - -A highly visible marking device in the red-orange-amber color
range, affixed to the rear of a train to indicate that the train is complete.
-MAXIMUM AUTHORIZED SPEED - -The highest speed that is permitted
over a specific portion of the railroad. It may be authorized by the special
instructions of the current timetable, Rules of the Operating Department or
any other publication authorized by the General Superintendent-
Transportation.
-BLOCK SIGNAL - -A fixed signal or hand signal in the absence of a fixed
signal, at the entrance of a block to govern trains using that block.
-INDICATION - -The information conveyed by the aspect of a signal.
-HOME SIGNAL - -A fixed signal which displays stop as it's most restrictive
aspect and governs the entrance to a route or block.
