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.

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.

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.

The tracks between the extreme opposing home signals of an interlocking.

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.

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.

A fixed signal indicating the limit of the block, the use of which is governed by manual block signal system rules.

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.

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.

A fixed signal used to govern the approach to a home signal.

A signal of a fixed location indicating a condition which affects the movement of a train.

A fixed signal that displays Stop signal as its most restrictive aspect and governs the entrance to a route or block.

The information conveyed by the aspect of a signal.

The fixed signals of an interlocking.

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.

A method of establishing working limits on a main track, secondary track or siding in which a roadway worker is notified by the Train Dispatcher through the Block Operator that no trains will operate within the working limits established on that track until the roadway worker reports clear of the track.

A method of establishing working limits on tracks not controlled by the Train Dispatcher or Block Operator by physically preventing the entry and movement of trains.

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.

An employee of a railroad, or of a contractor to a railroad, whose duties include inspection, construction, maintenance or repair of railroad track, bridges, roadway, signal and communication systems, electric traction systems, roadway facilities or roadway maintenance machinery on or near track or with the potential of fouling a track and flagmen and watchmen/lookouts responsible for their protection.

A properly equipped employee that has been annually trained on roadway worker protection whose sole duty is to provide at least 15 seconds advanced visual and auditory warning of approaching trains or on-track equipment to roadway workers.

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.

ADVANCED CIVIL SPEED ENFORCEMENT SYSTEM (ACSES)

A transponder and 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.

ACSES CONTROLLED TRAIN

A Passenger or Freight class train equipped with ACSES controlled apparatus: A Data Radio, Aspect Display Unit, sealed ACSES valve or switch, audible warning device and acknowledging switch in operative condition.

MAXIMUM AUTHORIZED SPEED (MAS)

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.

A speed not exceeding 30 mph, except in ASC territory, train will be governed by speed displayed on the cab signal indicator not to exceed 40 mph.

A speed at which a train can be stopped short of another train or obstruction.

RESTRICTED SPEED (RS)

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.

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 may make trailing point moves through the switch without previously aligning it by hand unless otherwise specified.

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.

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.

A power-operated switch also equipped for hand operation.

A hand-operated switch equipped with an electrical device that restricts the movement of the switch.

A switch that must be aligned by hand before a train makes a trailing point movement through the switch.

A switch within interlocking limits controlled by the Block Operator or Train Dispatcher working in conjunction with interlocking signals and other interlocking appliances.

A switch equipped with a spring mechanism that will restore the switch points to the normal position after having been trailed through.

A place at which a block-limit signal is displayed.

A place at which manual block signals are displayed.

A place from which an interlocking is operated.

A place at which trains are scheduled to receive and/or discharge passengers.

A place designated by name on the station pages of the current timetable.

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.

Defintions Flashcards

Student preview

75 questions

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1.

FLASHCARD QUESTION

Front

BLOCK

Back

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.

2.

FLASHCARD QUESTION

Front

ABSOLUTE BLOCK

Back

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.

3.

FLASHCARD QUESTION

Front

AUTOMATIC BLOCK SIGNAL SYSTEM

Back

A block signal system wherein the use of each block is governed by an automatic block signal, the cab signal indicator or both.

4.

FLASHCARD QUESTION

Front

BLOCK SIGNAL SYSTEM

Back

A series of consecutive blocks.

5.

FLASHCARD QUESTION

Front

MANUAL BLOCK SIGNAL SYSTEM

Back

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.

6.

FLASHCARD QUESTION

Front

AUTOMATIC SPEED CONTROL SYSTEM (ASC)

Back

A system so arranged that its operation will automatically result in a full service application of the train brakes if, while operating under a speed restriction, the speed of the train exceeds the predetermined rate.

7.

FLASHCARD QUESTION

Front

SPEED CONTROLLED TRAIN

Back

A train equipped with 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.

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