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LIRR RULES OF THE OPERATING DEPARTMENT DEFINITIONS, Exams of Advanced Education

University of WitwatersrandAdvanced Education

LIRR RULES OF THE OPERATING DEPARTMENT DEFINITIONS

Typology: Exams

2024/2025

Available from 01/04/2025

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LIRR RULES OF THE OPERATING DEPARTMENT
DEFINITIONS
Block - A length of track of defined limits, the use of which is governed by blocked
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 where 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) 1 - 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.
Automatic Speed Control System (ASC) 2 - The application will continue until the train is
either brought to a stop or, under the control of the engineer, its speed its 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 (ENG) - 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 (TC) - 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.
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LIRR RULES OF THE OPERATING DEPARTMENT

DEFINITIONS

Block - A length of track of defined limits, the use of which is governed by blocked 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 where 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) 1 - 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. Automatic Speed Control System (ASC) 2 - The application will continue until the train is either brought to a stop or, under the control of the engineer, its speed its 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 (ENG) - 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 (TC) - 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 (INT) - 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 train or track car when the engineer, conductor or track car driver is not qualified on the physical characteristic 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 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 affects the movement of a train. Home Signal - A fixed signal that displays Stop signal as its most restrictive aspect and governs the entrance of 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. Advanced Civil Speed Enforcement System (ACSES) - A transponder an data radio based train-control system which will automatically apply the brakes of an equipped train if, while approaching a Speed Restriction or Positive Train Stop Location, the speed of the train exceeds the predetermined rate.

Reduced Speed - A speed at which a train can be stopped short of another train or obstruction. Restricted Speed - A mode of operation, at which a train can be stopped within one half the range of vision, short of the next signal, another train, obstruction, derail, or switch improperly lined, looking out for broken rail or crossing protection not functioning, not exceeding 15 miles per hour. Slow Speed - A speed not exceeding 15 mph, except in ASC territory, train will be governed by speed displayed on the cab signal indicator not to exceed 30 mph. Automatic Safety Switch - A switch identified by a yellow switch stand. Trains mat make trailing point moves through the switch without previously aligning it by hand unless otherwise specified. Crossover - A track connection between two adjacent, not necessarily parallel tracks, consisting of a minimum of two switches, which is intended to be used primarily for the purpose of crossing over from one track to another. Derail - A track safety device, fixed or portable, designed to guide a car off the rails at a selected location on a track as a means of protection against collisions or other accidents. Dual Control Switch - A power -operated switch also equipped for hand operation. Electric Lock Switch - A hand-operated switch equipped with an electrical device that restricts the movement of the switch. Hand-Operated Switch - A switch that must be aligned by hand before a train makes a trailing point movement of the switch. 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. Spring Switch - A equipped with a spring mechanism that will restore the switch points to the normal position after having been trailed through. Block-Limit Station - A place at which a block-limit signal is displayed. Block Station - A place at which manual block signals are displayed. Interlocking Station - A place from which an interlocking is operated.

Passenger Station - A place at which trains are schedule to receive and/or discharge passengers. Station - A place designated by name on the station pages of the current timetable. Bulletin Notice - A notice issued to employees by the General Superintendent- Transportation. It may contain special schedules or other information pertaining to track work programs or special events and will be issued at a minimum of once per week. General Notice - A notice issued to employees by the General Superintendent- Transportation. It may contain operating instructions or other information as mat be necessary. General Order - An order issued to employees by the General Superintendent - Transportation. It may change or annul operating rules, timetable information or special instructions. Schedule - The part of a timetable that prescribe direction, number and movement of a regular train. Temporary Speed Restriction Bulletin (TSRB) - A daily bulletin containing necessary speed restrictions issued by the Train Dispatcher. Timetable - The authority for the movement of regular trains subject to the rules. It contains classified schedules and special instructions relating to the movement of trains. Controlled Siding - A designated track, the entrance and exit of which are governed by home signals. Current of Traffic - The movement of trains on a main track in one direction, as specified by special instruction. Industry Track - A track, or series of tracks, serving the needs of a commercial industry other that 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 to the prescribed signals, rules and special insxtructions. 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.