LIRR DEFINITIONS
(ASST. CONDUCTOR
PRE-EMPLOYMENT)
EXAM CORRECT
, block - ANSWERa length of track of defined limits which the use is governed by block
signals, block-limit signals, automatic speed control or any combination thereof.
Absolute Block - ANSWERA 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 - ANSWERA 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 - ANSWERA series of consecutive blocks.
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 Control 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 energy or any 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 contact with 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 the signal and
home signals of an interlocking.
(ASST. CONDUCTOR
PRE-EMPLOYMENT)
EXAM CORRECT
, block - ANSWERa length of track of defined limits which the use is governed by block
signals, block-limit signals, automatic speed control or any combination thereof.
Absolute Block - ANSWERA 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 - ANSWERA 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 - ANSWERA series of consecutive blocks.
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 Control 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 energy or any 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 contact with 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 the signal and
home signals of an interlocking.
