Definitions Flashcards
Absolute block
A blog established between blocks stations, Block limit stations, interlocking’s or any combination thereof which must not be occupied by more than one train except as provided by the rules
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.
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 (ASC)
A system so arranged that it’s operation will automatically result in the following:
A full service application of the train breaks if, while operating under a Speed restriction, the speed on the train see the predetermined rate. The application will continue until the train is either brought to a stop or, under the control of the engineer, it’s 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
Our 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 then passenger trains.
Interlocking
An arrangement of 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 retard 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 fix signal or a hand signal in the absence of a fix 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 fix 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 fix 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 signal
The fixed signal of an interlocking.
Marker
A highly visible markings device in the red-orange-amber color range, affixed to the rear of the train to indicate that the train is complete.
Defective locking device
A switch padlock used in relation to a manually operated switch or D rail that is vandal resistant; tamper-resistant; and capable of being locked and unlocked only by the class, craft or group of employees for whom the protection is being provided.
Defective securing device
Avendell and tamper-resistant device applied to a manually operated switch or do you out for the protection of roadway workers. This device must be secured, uniquely tagged and removed only by the class, craft or group of employees for whom the protection is being provided.
Flagman
When used in relation with the roadway worker safety, and employee assigned to direct or restrict the movement of trains passed a point on a track to provide on track safety for roadway workers, while engaged solely in performing that function.
Foul time
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 with in the working limits established on that track until the roadway worker reports clear of the track.
Inaccessible 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.
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.
Roadway worker
An employee of the 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 system, roadway facilities or roadway maintenance machinery on or near or with the potential of fouling a track and flagmen and Watchmen/lookouts responsible for their protection.
Watchman/Lookout
A properly equipped employee that has been annually trained on the roadway worker protection whose sole duty is to provide at least 15 seconds advanced visual and auditory morning of approaching trains or on track equipment to roadway workers.
Working limits
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.
Limited speed
A speed not exceeding 40 mph
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.
Medium speed
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.
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 with in 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 to exceed 15 mph.
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 Stan. Trains may make trailing point moves through the switch without previous Leolani it by hand except as specified by timetable special instruction.
Crossover
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
Attract 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 collision or other accidents.
Duel 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 through 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 switch equipped with a spring mechanism that will restore the spring point 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 scheduled to receive and/or discharge passengers.
Station
A place designated by name on the station pages of the current timetable.
General notice
A notice issued to employees by the general superintendent-transportation. It may contain operating instructions or other information as may be necessary.
General order
And order issued to employees by the general superintendent-transportation it may change or annul operating rules, timetable information or special instructions.
Speed restriction notice
A notice issue to employees by the general superintendent transportation. It will contain necessary speed restrictions and will be issued at a minimum of once per week.
Schedule
That part of a timetable that prescribes direction, number in movement of a regular train.
Timetable
The authority for the movement of regular trains subject to the rules. It contains classified schedules and special instructions related 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 then a railroad.
Main track
A designated track upon which trains are operated by timetable, form L or both 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 prescribe the signals, rules and special instructions.
Yard limits
The portion of single main track between yard limit boards, as specified by special instruction.
Camp car
Any on-tracked vehicle, except a wreck train, that is used to house railroad or contract employees.
Extra train
A train not authorized by a timetable. It must be designated as:
Passenger extra-for a 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.
Passenger train
A train carrying revenue passengers
Push-pull train
A train consisting of a bi-level 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 the superior direction
A train given precedence in the directions specified as between opposing regular trains.
Train of superior right
A train given precedence by form L
