GCOR PRACTICE EXAM Question and Answer
2026 | Complete Certification Review Guide
| Grade A+
• Controlled Signal -✓✓Absolute signal controlled by a control operator
• Signal Indication -✓✓The action required by the signal aspect.
• Main Track -✓✓A track extending through yards and between stations
that must not be occupied without authority or protection.
• Fixed Signal -✓✓A signal that is fixed to a location permanently and
that indicates a condition affecting train movement.
• Signal aspect -✓✓The appearance of a fixed or cab signal.
• Block -✓✓A length of track:
-Between consecutive block signals
-Between a block signal and the end of block system limits
In ATC limits, the use of which is governed by cab signals and/or block
signals
,• Proceed indication -✓✓Any block signal indication that allows a train
to proceed without stopping.
• Block system -✓✓A block or series of consecutive blocks within
ABS, ACS, CTC, or interlocking limits.
• CTC -✓✓A block system that uses block signal indications to
authorize train movements.
• Double track -✓✓Two main tracks where the current of traffic on one
track is in a specified direction and in the opposite direction on the other.
• Interlocking Limits -✓✓The tracks between outer opposing absolute
signals of an interlocking.
• Track Bulletin -✓✓A notice of conditions affecting train movement. It
may also authorize movement against the current of traffic where Rule
9.14 (Movement with the Current of Traffic) is in effect.
• When a train is required to move at restricted speed, movement must
be made at a speed that allows what? -✓✓Stopping within half the
range of vision short of:
-Train
-Engine
-Railroad Car
, -Men or equipment fouling the track
-Stop signal
-Derail or switch lined improperly
• Employees must be careful to prevent injuring themselves or others.
They must be ___________ and ___________ when performing their
duties and plan their work to avoid ___________. -✓✓Alert, attentive,
injury
• When a report is received from the field of accidents, injuries, or track
or mechanical defects, the train dispatcher must... -✓✓Ensure the
necessary safeguards are provided as soon as possible.
• In case of doubt as to whether operation of train is safe, the train
dispatcher must... -✓✓Require the train to stop
• When responding to a report of injuries, the dispatcher is required to do
what? -✓✓-Obtain exact location including railroad mile post and
public access information
-Protect the location
-Notify RMCC
-Give this priority over other duties
2026 | Complete Certification Review Guide
| Grade A+
• Controlled Signal -✓✓Absolute signal controlled by a control operator
• Signal Indication -✓✓The action required by the signal aspect.
• Main Track -✓✓A track extending through yards and between stations
that must not be occupied without authority or protection.
• Fixed Signal -✓✓A signal that is fixed to a location permanently and
that indicates a condition affecting train movement.
• Signal aspect -✓✓The appearance of a fixed or cab signal.
• Block -✓✓A length of track:
-Between consecutive block signals
-Between a block signal and the end of block system limits
In ATC limits, the use of which is governed by cab signals and/or block
signals
,• Proceed indication -✓✓Any block signal indication that allows a train
to proceed without stopping.
• Block system -✓✓A block or series of consecutive blocks within
ABS, ACS, CTC, or interlocking limits.
• CTC -✓✓A block system that uses block signal indications to
authorize train movements.
• Double track -✓✓Two main tracks where the current of traffic on one
track is in a specified direction and in the opposite direction on the other.
• Interlocking Limits -✓✓The tracks between outer opposing absolute
signals of an interlocking.
• Track Bulletin -✓✓A notice of conditions affecting train movement. It
may also authorize movement against the current of traffic where Rule
9.14 (Movement with the Current of Traffic) is in effect.
• When a train is required to move at restricted speed, movement must
be made at a speed that allows what? -✓✓Stopping within half the
range of vision short of:
-Train
-Engine
-Railroad Car
, -Men or equipment fouling the track
-Stop signal
-Derail or switch lined improperly
• Employees must be careful to prevent injuring themselves or others.
They must be ___________ and ___________ when performing their
duties and plan their work to avoid ___________. -✓✓Alert, attentive,
injury
• When a report is received from the field of accidents, injuries, or track
or mechanical defects, the train dispatcher must... -✓✓Ensure the
necessary safeguards are provided as soon as possible.
• In case of doubt as to whether operation of train is safe, the train
dispatcher must... -✓✓Require the train to stop
• When responding to a report of injuries, the dispatcher is required to do
what? -✓✓-Obtain exact location including railroad mile post and
public access information
-Protect the location
-Notify RMCC
-Give this priority over other duties
