GCOR CERTIFICATION TEST 2026 QUESTIONS
WITH VERIFIED CORRECT ANSWERS
◉ What must the conductor remind the engineer of? Answer: Limits
of authority, track warrants, track bulletins, and radio speed
restrictions.
◉ When must the conductor inform an engineer of an upcoming
restriction along their route? Answer: After the train passes the last
station before, but at least two miles from the restriction.
◉ When mobile and transmitting or acknowledging a radio
communication, what identification is required? Answer: Name or
initials of railroad and train number, engine number, or words that
identify the precise mobile unit.
◉ What are examples of mandatory directives? Answer: Track
warrants, track bulletins, DTC authority, track and time, track
permits, and radio speed restrictions. (must be written and not
copied while in control of train).
◉ True or false: A mandatory directive restricts a train's movement
will not be issued near a point where the restriction applies until the
engineer or conductor confirms that the train can comply with the
restriction. Answer: True.
,◉ When can you indicate "void" on a mandatory directive form?
Answer: When employee reports clear of authority limits or
mandatory directive is made void.
◉ How long must crew retain mandatory directives, including those
that have been voided? Answer: For continuous tour of duty, or as
instructed by train dispatcher.
◉ Before a mandatory directive is acted upon, what must occur?
Answer: The conductor and engineer must each have a written copy
of the mandatory directive, and each crew member must read and
understand it.
◉ If the person who is giving the signal to shove a train disappears,
or the light being used disappears, what must employees do?
Answer: Stop movement, unless the employee on the leading car
controls the air brakes.
◉ True or false: Any object waived violently by any person on or
near the track is a signal to stop. Answer: True.
◉ When radio communication is used for shoving movement, what
information must be specified to the engineer? Answer: The
,direction and distance, and distance must be specified when
distance is more than four cars.
◉ When using radio communication to make a shove, when must
movement be stopped unless additional instructions are received by
the engineer? Answer: Half the distance specified.
◉ What aspect is used to indicate a temporary speed restriction?
Answer: A yellow flag.
◉ Yellow-red flags are used to indicate what? Answer: That a train
may be required to stop.
◉ When flags are not displayed to indicate temporary speed
restrictions, where will information on such restrictions be found?
Answer: In the track bulletin, track warrant, or general order.
◉ What documents may restrict or stop trains because of track
conditions, structures, or men or equipment? Answer: Track
bulletins, track warrants, or general orders.
◉ To indicate a restricted area, where must yellow flags be
displayed? Answer: Two miles ahead of the restricted area.
, ◉ What must occur once the train reaches a restricted area
indicated by a yellow flag? Answer: Train can proceed at the speed
specified by the track warrant, track bulletin, general orders, or
radio speed restriction.
◉ When operating within a restricted area, as indicated by a yellow
flag, when can the train resume train speed? Answer: When the rear
of the train clears the restricted area.
◉ When a yellow flag is displayed, but the restriction is not specified
by a track warrant, track bulletin, or general orders, what must the
crew do? Answer: Once the train is two miles beyond the yellow flag,
crew may proceed at a speed not exceeding 10 MPH. Crew can only
resume speed after the rear of the train has passed a green flag, or
traveled four miles beyond the yellow flag and the dispatcher has
verified that no bulletin or warrant is in effect at that location.
◉ When will a Maintenance of Way employee display yellow-red
flags? Answer: One hour before the track bulletin Form B takes effect
until one hour after it expires.
◉ True or false: The display of yellow-red flags extends the
authorized working time beyond the times listed on the track
bulletin form B. Answer: False.
WITH VERIFIED CORRECT ANSWERS
◉ What must the conductor remind the engineer of? Answer: Limits
of authority, track warrants, track bulletins, and radio speed
restrictions.
◉ When must the conductor inform an engineer of an upcoming
restriction along their route? Answer: After the train passes the last
station before, but at least two miles from the restriction.
◉ When mobile and transmitting or acknowledging a radio
communication, what identification is required? Answer: Name or
initials of railroad and train number, engine number, or words that
identify the precise mobile unit.
◉ What are examples of mandatory directives? Answer: Track
warrants, track bulletins, DTC authority, track and time, track
permits, and radio speed restrictions. (must be written and not
copied while in control of train).
◉ True or false: A mandatory directive restricts a train's movement
will not be issued near a point where the restriction applies until the
engineer or conductor confirms that the train can comply with the
restriction. Answer: True.
,◉ When can you indicate "void" on a mandatory directive form?
Answer: When employee reports clear of authority limits or
mandatory directive is made void.
◉ How long must crew retain mandatory directives, including those
that have been voided? Answer: For continuous tour of duty, or as
instructed by train dispatcher.
◉ Before a mandatory directive is acted upon, what must occur?
Answer: The conductor and engineer must each have a written copy
of the mandatory directive, and each crew member must read and
understand it.
◉ If the person who is giving the signal to shove a train disappears,
or the light being used disappears, what must employees do?
Answer: Stop movement, unless the employee on the leading car
controls the air brakes.
◉ True or false: Any object waived violently by any person on or
near the track is a signal to stop. Answer: True.
◉ When radio communication is used for shoving movement, what
information must be specified to the engineer? Answer: The
,direction and distance, and distance must be specified when
distance is more than four cars.
◉ When using radio communication to make a shove, when must
movement be stopped unless additional instructions are received by
the engineer? Answer: Half the distance specified.
◉ What aspect is used to indicate a temporary speed restriction?
Answer: A yellow flag.
◉ Yellow-red flags are used to indicate what? Answer: That a train
may be required to stop.
◉ When flags are not displayed to indicate temporary speed
restrictions, where will information on such restrictions be found?
Answer: In the track bulletin, track warrant, or general order.
◉ What documents may restrict or stop trains because of track
conditions, structures, or men or equipment? Answer: Track
bulletins, track warrants, or general orders.
◉ To indicate a restricted area, where must yellow flags be
displayed? Answer: Two miles ahead of the restricted area.
, ◉ What must occur once the train reaches a restricted area
indicated by a yellow flag? Answer: Train can proceed at the speed
specified by the track warrant, track bulletin, general orders, or
radio speed restriction.
◉ When operating within a restricted area, as indicated by a yellow
flag, when can the train resume train speed? Answer: When the rear
of the train clears the restricted area.
◉ When a yellow flag is displayed, but the restriction is not specified
by a track warrant, track bulletin, or general orders, what must the
crew do? Answer: Once the train is two miles beyond the yellow flag,
crew may proceed at a speed not exceeding 10 MPH. Crew can only
resume speed after the rear of the train has passed a green flag, or
traveled four miles beyond the yellow flag and the dispatcher has
verified that no bulletin or warrant is in effect at that location.
◉ When will a Maintenance of Way employee display yellow-red
flags? Answer: One hour before the track bulletin Form B takes effect
until one hour after it expires.
◉ True or false: The display of yellow-red flags extends the
authorized working time beyond the times listed on the track
bulletin form B. Answer: False.
