LIRR SIGNALS & DEFINITIONS 200 SIGNALS
AND DEFINITIONS WELL -ELABORATED
LATEST 2024 REVIEW GUIDE/ LIRR SIGNALS &
DEFINITIONS 200 SIGNALS AND DEFINITIONS
EXPLAINED (NEW!!)
NAME: Clear-Block.
INDICATION: Proceed; manual block clear.
NAME: Clear-Block.
INDICATION: Proceed; manual block clear.
NAME: Clear-Block.
INDICATION: Proceed; manual block clear.
NAME: Clear-block.
INDICATION: Proceed; manual block clear 1 / 4
NAME: Stop-signal.
INDICATION: Stop.
NAME: Clear.
INDICATION: Proceed.
NAME: Clear.
INDICATION: Proceed.
NAME: Clear.
INDICATION: Proceed.
NAME: Clear. 2 / 4
INDICATION: Proceed.
NAME: Clear.
INDICATION: Proceed.
NAME: Clear.
INDICATION: Proceed.
NAME: Absolute-Clear.
INDICATION: Proceed; Track clear to next interlocking signal. Approach next
interlocking signal prepared to stop.
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.
BLOCK 3 / 4
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.
ABSOLUTE BLOCK
A block signal system wherein the use of each block is governed by an automatic block signal, the cab signal indicator or both.
AUTOMATIC BLOCK SIGNAL SYSTEM
A series of consecutive blocks.
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.
MANUAL BLOCK SIGNAL 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.
AUTOMATIC SPEED CONTROL SYSTEM (ASC)
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.
SPEED CONTROLLED TRAIN
A unit propelled by any form of energy or a combination of units operated from a single control, used in road or yard service.
ENGINE (ENG)
Equipment capable of being propelled by electrical energy through the use of third rail contact shoes.MULTIPLE UNIT EQUIPMENT
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