GCOR MAIN EXAM TEST 2025 QUESTIONS WITH
SOLUTIONS GUARANTEE A+
✔✔Who is responsible for the safety and protection of the train? - ✔✔The conductor
and engineer.
✔✔What must the conductor remind the engineer of? - ✔✔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? - ✔✔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? - ✔✔Name or initials of railroad and train number, engine
number, or words that identify the precise mobile unit.
✔✔What are examples of mandatory directives? - ✔✔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. - ✔✔True.
✔✔When can you indicate "void" on a mandatory directive form? - ✔✔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? - ✔✔For continuous tour of duty, or as instructed by train dispatcher.
✔✔Before a mandatory directive is acted upon, what must occur? - ✔✔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? - ✔✔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. - ✔✔True.
,✔✔When radio communication is used for shoving movement, what information must
be specified to the engineer? - ✔✔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? - ✔✔Half the
distance specified.
✔✔What aspect is used to indicate a temporary speed restriction? - ✔✔A yellow flag.
✔✔Yellow-red flags are used to indicate what? - ✔✔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? - ✔✔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? - ✔✔Track bulletins, track warrants, or general orders.
✔✔To indicate a restricted area, where must yellow flags be displayed? - ✔✔Two miles
ahead of the restricted area.
✔✔What must occur once the train reaches a restricted area indicated by a yellow flag?
- ✔✔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? - ✔✔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? - ✔✔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? - ✔✔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. - ✔✔False.
, ✔✔When a yellow-red flag is displayed and the restriction is not specified by a track
bulletin, track warrant, or general order, what must crew members do? - ✔✔Be
prepared to stop short of a red flag two miles beyond the yellow-red flag.
✔✔If no red flag is displayed following a yellow-red flag, what must the crew members
do? - ✔✔Move at restricted speed. Increase speed only after a crew member has
received instructions for the employee in charge of the restriction, or the leading wheels
of movement are four miles beyond the yellow-red flag, and the train dispatcher has
verified that no track bulletin or track warrant protecting men or equipment is in effect at
that location.
✔✔What must trains do when a red flag or red light is displayed? - ✔✔Stop, short of the
red flag or red light an not proceed unless the employee in charge gives instructions,
including the milepost location of the red flag or red light.
✔✔True or false: In red flag restricted areas, if instructions to proceed are provided by
the employee in charge before the train stops, the train may pass the red flag or red
light without stopping. - ✔✔True.
✔✔What must a train do when it approaches an unattended fusee burning on or near its
track? - ✔✔The train must stop consistent with good train handling. After stopping, the
train must proceed at restricted speed for one mile beyond the fusee.
✔✔When should the engine bell be rung? - ✔✔Before moving, except when making
momentary stop and start switching movements, as a warning signal any time it is
necessary, when approaching men or equipment on or near the track, when whistle
signal (7) is required, and when approaching public crossing at grade with the engine in
front.
✔✔When may the whistle be used? - ✔✔At any time as a warning regardless of any
whistle prohibitions.
✔✔Other forms of communications may be used in place of whistle signals, except
under which signals? - ✔✔When persons or livestock are on the track at other than road
crossing at grade (1), when approaching public crossings at grade with the engine in
front (7), and when approaching men or equipment on or near the track (8).
✔✔What is the name and indication of the following signal aspect: Yellow over flashing
green? - ✔✔APPROACH LIMITED -- Proceed prepared to pass the next signal not
exceeding 60 MPH and be prepared to enter diverging route at prescribed speed.
✔✔What is the name and indication of the following signal aspect: Yellow over green or
yellow over green over red? - ✔✔ADVANCE APPROACH -- Proceed prepared to pass
SOLUTIONS GUARANTEE A+
✔✔Who is responsible for the safety and protection of the train? - ✔✔The conductor
and engineer.
✔✔What must the conductor remind the engineer of? - ✔✔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? - ✔✔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? - ✔✔Name or initials of railroad and train number, engine
number, or words that identify the precise mobile unit.
✔✔What are examples of mandatory directives? - ✔✔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. - ✔✔True.
✔✔When can you indicate "void" on a mandatory directive form? - ✔✔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? - ✔✔For continuous tour of duty, or as instructed by train dispatcher.
✔✔Before a mandatory directive is acted upon, what must occur? - ✔✔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? - ✔✔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. - ✔✔True.
,✔✔When radio communication is used for shoving movement, what information must
be specified to the engineer? - ✔✔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? - ✔✔Half the
distance specified.
✔✔What aspect is used to indicate a temporary speed restriction? - ✔✔A yellow flag.
✔✔Yellow-red flags are used to indicate what? - ✔✔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? - ✔✔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? - ✔✔Track bulletins, track warrants, or general orders.
✔✔To indicate a restricted area, where must yellow flags be displayed? - ✔✔Two miles
ahead of the restricted area.
✔✔What must occur once the train reaches a restricted area indicated by a yellow flag?
- ✔✔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? - ✔✔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? - ✔✔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? - ✔✔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. - ✔✔False.
, ✔✔When a yellow-red flag is displayed and the restriction is not specified by a track
bulletin, track warrant, or general order, what must crew members do? - ✔✔Be
prepared to stop short of a red flag two miles beyond the yellow-red flag.
✔✔If no red flag is displayed following a yellow-red flag, what must the crew members
do? - ✔✔Move at restricted speed. Increase speed only after a crew member has
received instructions for the employee in charge of the restriction, or the leading wheels
of movement are four miles beyond the yellow-red flag, and the train dispatcher has
verified that no track bulletin or track warrant protecting men or equipment is in effect at
that location.
✔✔What must trains do when a red flag or red light is displayed? - ✔✔Stop, short of the
red flag or red light an not proceed unless the employee in charge gives instructions,
including the milepost location of the red flag or red light.
✔✔True or false: In red flag restricted areas, if instructions to proceed are provided by
the employee in charge before the train stops, the train may pass the red flag or red
light without stopping. - ✔✔True.
✔✔What must a train do when it approaches an unattended fusee burning on or near its
track? - ✔✔The train must stop consistent with good train handling. After stopping, the
train must proceed at restricted speed for one mile beyond the fusee.
✔✔When should the engine bell be rung? - ✔✔Before moving, except when making
momentary stop and start switching movements, as a warning signal any time it is
necessary, when approaching men or equipment on or near the track, when whistle
signal (7) is required, and when approaching public crossing at grade with the engine in
front.
✔✔When may the whistle be used? - ✔✔At any time as a warning regardless of any
whistle prohibitions.
✔✔Other forms of communications may be used in place of whistle signals, except
under which signals? - ✔✔When persons or livestock are on the track at other than road
crossing at grade (1), when approaching public crossings at grade with the engine in
front (7), and when approaching men or equipment on or near the track (8).
✔✔What is the name and indication of the following signal aspect: Yellow over flashing
green? - ✔✔APPROACH LIMITED -- Proceed prepared to pass the next signal not
exceeding 60 MPH and be prepared to enter diverging route at prescribed speed.
✔✔What is the name and indication of the following signal aspect: Yellow over green or
yellow over green over red? - ✔✔ADVANCE APPROACH -- Proceed prepared to pass
