Automatic Train Stop System (ATS) - ✔️✔️A system activated by wayside inductors
positioned to apply the brakes automatically until the train stops.
Automatic Block Signal System (ABS) - ✔️✔️A series of consecutive blocks governed
by block signals, cab signals, or both. The signals are activated by a train or by certain
conditions that affect the block use. SIGNALS DO NOT AUTHORIZE MOVEMENT.
Automatic Train Control (ATC) - ✔️✔️A system to enforce compliance with cab and
wayside signal indications. If the train exceeds a predetermined speed for a given signal
indication and speed is not reduced at a sufficient rate, brakes are automatically
applied.
Absolute Block - ✔️✔️A length of track that no train is permitted to enter while the track
is occupied by another train.
Absolute Signal - ✔️✔️A block or interlocking signal without a number plate, or
designated by an A marker.
Timetable Letter "T" - ✔️✔️Turning Facility
Timetable Letter "U" - ✔️✔️Railroad crossing not protected by signals or gates
Timetable Letter "X" - ✔️✔️Crossover
Timetable Letter "X(2)" - ✔️✔️Multiple Crossovers
Timetable Letter "Y" - ✔️✔️Yard Limits
Automatic Cab Signal System (ACS) - ✔️✔️A system that allows cab signals and the
cab warning whistle to operate automatically.
Articulated - ✔️✔️Permanently connected multiple unit cars that share a common
truck.
A fixed signal at the entrance of a block that governs trains entering and using that
block. - ✔️✔️Block Signal
Timetable Letter "A" - ✔️✔️Automatic Interlocking
Timetable Letter "B" - ✔️✔️General Orders, Notices, & Circulars
,Timetable Letter "C" - ✔️✔️Radio Communication
Timetable Letter "g" - ✔️✔️Gate, normal position against conflicting route
Timetable Letter "G" - ✔️✔️Gate, normal position against this subdivision
Timetable Letter "J" - ✔️✔️Junction
Timetable Letter "M" - ✔️✔️Manual Interlocking
Timetable Letter "P" - ✔️✔️Telephone
Timetable Letter "R" - ✔️✔️Restricted Limits
Timetable Letter "S" - ✔️✔️Railroad crossing protected by permanent stop sign
ATC Actuator - ✔️✔️An ATC brake applying apparatus.
Block - ✔️✔️A length of track between consecutive block signals; between a block
signal and the end of the block system limits; or, in ATC limits the use of which is
governed by cab signals and/or block signals.
Block Register Territory (BRT) - ✔️✔️A method of operation in non-signaled territory
where trains, men, and equipment are authorized to occupy the main track in limits
designated by the timetable.
Block Signal - ✔️✔️A fixed signal at the entrance of a block that governs trains entering
and using that block.
Cab Signal - ✔️✔️A signal in the engineers compartment or cab that indicates a
condition affecting train movement. Cab signals are used with interlocking or block
signals or without block signals.
Cars - ✔️✔️railroad cars
Centralized Traffic Control (CTC) - ✔️✔️A block system that uses block signal
indications to authorize train movements.
Clearance Point - ✔️✔️
Crossover - ✔️✔️Section of track with switches at both ends that connects two
adjacent tracks
, Types of Mandatory Directives - ✔️✔️Track warrants, track bulletins, & track and time
How should an employee react to a radio transmission that is not understood or
incomplete? - ✔️✔️Not act upon it and treat it as not sent
How must railroad radio emergency calls begin? - ✔️✔️Emergency, emergency,
emergency
Emergency calls are used to cover reports of hazardous conditions which could result in
what? - ✔️✔️Death or injury, damage to property or serious disruption of railroad
operations.
What events would require the emergency transmission? - ✔️✔️Derailments;
Collisions; Storms; Washouts; Fires; Track Obstruction; Emergency brake applications;
Overrunning limits of authority; Overrunning stop indications.
Conductor - ✔️✔️Crew member in charge of train or yard crew
Control Operator - ✔️✔️Employee assigned to operate a CTC or interlocking control
machine or authorized to grant track permits.
Control Point - ✔️✔️The location of absolute signals controlled by a control operator.
Controlled Siding - ✔️✔️A siding within CTC or interlocking limits where a signal
indication authorizes the siding's use.
How are trains identified? - ✔️✔️Initials and engine number, adding direction when
required.
Who must expect the movement of trains, engines, cars, or other movable equipment at
any time, on any track, in either direction? (GCOR 1.20) - ✔️✔️All employees
When should a highly visible marker be displayed? - ✔️✔️From 1 hour before sunset to
1 hour after sunrise and when weather conditions restrict visibility to less than 1/2 a
mile.
Accidents; personal injuries; defects in tacks, bridges or signals; or any unusual
condition that may affect the safe and efficient operation of the railroad (GCOR 1.1.3) -
✔️✔️Must be reported by first means of communication
When a condition exists that requires a train to be restricted, the train dispatcher will be
advised of the location of the restriction using... - ✔️✔️Mile posts or tenths of mile
posts