UNION PACIFIC CONDUCTOR
CERTIFICATION EVALUATION TEST 2026
QUESTIONS AND ANSWERS GRADED A+
●● Absolute Block.
Answer: A length of track that no train is permitted to enter while the
track is occupied by another train
●● Absolute Signal.
Answer: A block or interlocking signal without a number plate or
designated by an A marker
●● Adjacent Track.
Answer: Parallel tracks that are not separated by a single lane roadway
or similar distance; only applies if Track Breach Protection is required
●● Articulated.
Answer: Permanently connected multiple unit cars that share a common
truck
●● Automatic Train Control Actuator.
Answer: An ATC brake applying apparatus
,●● Automatic Cab Signal System.
Answer: A system that allows cab signals and the cab warning whistle to
operate automatically
●● Automatic Train Control.
Answer: A system to enforce compliance with cabin signal indications.
If the train exceeds a predetermined speed for a given cab signal
indication and speed is not reduced at a sufficient rate, brakes are
automatically applied.
●● Automatic Train Stop Systems.
Answer: A system activated by wayside inductors positioned to apply
the brakes automatically until the train stops
●● Block.
Answer: A length of track: between consecutive block signals, between a
block signal and the end of block system limits, or in automatic train
control limits, the use of which is governed by cab signals and/or block
signals
●● Block Register Territory.
Answer: A method of operation in non-signal territory where trains,
men, and equipment are authorized to occupy the main track in limits
designated by the timetable
, ●● Block Signal.
Answer: A fixed signal at the entrance of a block that governs trains
entering and using that block
●● Block System.
Answer: A block or series of consecutive blocks within ABS, ACS,
CTC, or interlocking limits
●● Breach.
Answer: To enter an area between two adjacent tracks
●● Cab Red Zone.
Answer: Exists during critical times or when multiple tasks are
occurring; an environment must be created in the locomotive control
compartment that focuses exclusively on controlling the train, verbally
communicating restrictions, and proper application of the rules
●● Cab Signal.
Answer: A signal in the engineers compartment or can that indicated a
condition affecting train movement. Cab signals are used with
interlocking or block signals or without block signals.
●● Cars.
Answer: Railroad cars
CERTIFICATION EVALUATION TEST 2026
QUESTIONS AND ANSWERS GRADED A+
●● Absolute Block.
Answer: A length of track that no train is permitted to enter while the
track is occupied by another train
●● Absolute Signal.
Answer: A block or interlocking signal without a number plate or
designated by an A marker
●● Adjacent Track.
Answer: Parallel tracks that are not separated by a single lane roadway
or similar distance; only applies if Track Breach Protection is required
●● Articulated.
Answer: Permanently connected multiple unit cars that share a common
truck
●● Automatic Train Control Actuator.
Answer: An ATC brake applying apparatus
,●● Automatic Cab Signal System.
Answer: A system that allows cab signals and the cab warning whistle to
operate automatically
●● Automatic Train Control.
Answer: A system to enforce compliance with cabin signal indications.
If the train exceeds a predetermined speed for a given cab signal
indication and speed is not reduced at a sufficient rate, brakes are
automatically applied.
●● Automatic Train Stop Systems.
Answer: A system activated by wayside inductors positioned to apply
the brakes automatically until the train stops
●● Block.
Answer: A length of track: between consecutive block signals, between a
block signal and the end of block system limits, or in automatic train
control limits, the use of which is governed by cab signals and/or block
signals
●● Block Register Territory.
Answer: A method of operation in non-signal territory where trains,
men, and equipment are authorized to occupy the main track in limits
designated by the timetable
, ●● Block Signal.
Answer: A fixed signal at the entrance of a block that governs trains
entering and using that block
●● Block System.
Answer: A block or series of consecutive blocks within ABS, ACS,
CTC, or interlocking limits
●● Breach.
Answer: To enter an area between two adjacent tracks
●● Cab Red Zone.
Answer: Exists during critical times or when multiple tasks are
occurring; an environment must be created in the locomotive control
compartment that focuses exclusively on controlling the train, verbally
communicating restrictions, and proper application of the rules
●● Cab Signal.
Answer: A signal in the engineers compartment or can that indicated a
condition affecting train movement. Cab signals are used with
interlocking or block signals or without block signals.
●● Cars.
Answer: Railroad cars
