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LIRR DEFINITIONS 1 - 64, Exams of Advanced Education

University of WitwatersrandAdvanced Education

LIRR DEFINITIONS 1 - 64 EXAM UPDADE

Typology: Exams

2024/2025

Available from 01/04/2025

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LIRR DEFINITIONS 1 - 64
Block - 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 - 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 - 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, 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 tracks between the extreme opposing home signals of an
interlocking
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LIRR DEFINITIONS 1 - 64

Block - 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 - 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 - 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, 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 tracks 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 movement is to be made 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 Block Signal - A 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 - 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 affects the movement of a train Home Signal - A fixed signal that displays stop as its 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 job Briefing - When 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 Limited Speed - A speed not exceeding 40 miles per hour 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 of Transportation

General Notice - A notice issued to employees by the General Superintendent of Transportation. It may contain operating instructions or other information as may be necessary General Order - An order issued to employees by the General Superintendent of Transportation. It may change or annul operation rules, timetable information or special instructions Schedule - That part of a timetable that prescribes direction, number and movement of regular train Timetable - The authority for the movement of regular trains subject to the rules. It may contain classified schedules and special instructions relating to the movement of trains Controlled Siding - A designated track, the entrance and exit of which is governed by home signals Current of Traffic - The movement of trains on a main track in one direction, as specified by special instructions Industry Track - A track, or series of tracks, serving the needs of a commercial industry other than a railroad Main Track - A designated track upon which trains are operated by timetable, form L or both or the use of which is governed by block signals Secondary Track - A designated track upon which trains may be operated without timetable or Form L authority or block signals subject to the prescribed signals, rules and special instructions Siding - A designated track adjacent to a main track for the meeting or passing of trains Single Track - A main track upon which trains are operated in both directions Two or More Tracks - Two or more main tracks upon which trains are operated as designated in the special instructions Yard - A system of tracks, other than main tracks, secondary tracks or sidings used for making up trains, storing cars and other purposes. All movements are subject to prescribed signals, rules and special instructions Yard Limits - A portion of single track between yard limit boards, as specified by special instructions

Camp Car - Any on track vehicle, except a Wreck train, that is used to house railroad or contract employees. Passenger Train - A train carrying revenue passengers Push-Pull Train - A train consisting of a bi-level cab control car at one end and a diesel or dual mode locomotive at the opposite end. Regular Train - A train authorized by a timetable schedule Superior Train - A train having precedence over another train Train - An engine or more than one engine coupled with or without cars, displaying markers Train of Superior Direction - A train given precedence in the direction specified as between opposing regular trains Train of Superior Right - A train given precedence by Form L Extra Train - A train not authorized by a timetable schedule. It must be designated as: Passenger Extra - For passenger train extra Work Extra- For work train extra Track Car Extra-For track car extra Extra-For any other extra train except passenger extra, work extra or track car extra