GCOR CORE EXAM SET 2025 QUESTIONS WITH SOLUTIONS
GUARANTEE A+
✔✔Flagman - ✔✔Any employee providing flag protection as outlined in Rule 6.19 (Flag
Protection) and for other purposes as outlined in the rules.
✔✔Foreman - ✔✔Employee in charge of work.
✔✔Interlocking - ✔✔Signal appliances that are interconnected so that each of their
movements follows the other in a proper sequence. Interlockings may be operated
manually or automatically.
✔✔Interlocking Limits - ✔✔The tracks between outer opposing absolute signals of an
interlocking.
✔✔Interlocking Signals - ✔✔The fixed signals of an interlocking that govern trains using
interlocking limits.
✔✔Main Track - ✔✔A track extending through yards and between stations that must not
be occupied without authority or protection.
✔✔Men or Equipment - ✔✔A term referring to Engineering Department employees and
their related equipment.
✔✔Multiple Main Tracks - ✔✔Two or more main tracks that are used according to the
timetable.
✔✔Pilot - ✔✔An employee assigned to a train to assist an engineer or conductor who is
unfamiliar with the rules or the portion of railroad the train will operate on.
✔✔Proceed Indication - ✔✔Any block signal indication that allows a train to proceed
without stopping.
✔✔Radio - ✔✔As used in these rules it also applies to wireless
communication devices when used in railroad operation.
✔✔Radio Blocking - ✔✔A method to establish an absolute block for a following train in
non-signaled territory by direct communication with a preceding train.
✔✔Remote Control Operator (RCO) - ✔✔An employee who may operate an engine with
or without cars by means of a remote control transmitter.
✔✔Remote Control Transmitter - ✔✔A device that gives the remote control operator
control of a remote control engine.
, ✔✔Remote Control Zone (RCZ) - ✔✔A portion of track(s) within definite limits
designated in the timetable special instructions.
✔✔Restricted Limits - ✔✔A portion of main track designated by restricted limits signs
and timetable special instructions or a track bulletin.
✔✔Restricted Speed - ✔✔When required to move at restricted speed, movement must
be made at a speed that allows stopping within half the range of vision short of:
• Train.
• Engine.
• Railroad car.
• Men or equipment fouling the track.
• Stop signal.
or
• Derail or switch lined improperly.
When a train or engine is required to move at restricted speed, the crew must keep a
lookout for broken rail and not exceed 20 MPH.
Comply with these requirements until the leading wheels reach a point where movement
at restricted speed is no longer required. (HER)
✔✔Reverse Movement - ✔✔A movement opposite the authorized direction.
✔✔Siding - ✔✔A track connected to the main track and used for meeting or passing
trains. Location of sidings are shown in the timetable.
✔✔Signal Aspect - ✔✔The appearance of a fixed or cab signal.
✔✔Signal Indication - ✔✔The action required by the signal aspect.
✔✔Single Track - ✔✔A main track where trains are operated in both directions.
✔✔Special Instructions - ✔✔Instructions contained in the timetable or other
publication.
✔✔Spring Switch - ✔✔A switch with a spring mechanism that returns the
switch points to the original position after they are trailed through.
✔✔Station - ✔✔A place designated by name in the timetable station column.
✔✔Switch Point Indicator - ✔✔A light type indicator used during movement over certain
switches to show that switch points fit properly.
GUARANTEE A+
✔✔Flagman - ✔✔Any employee providing flag protection as outlined in Rule 6.19 (Flag
Protection) and for other purposes as outlined in the rules.
✔✔Foreman - ✔✔Employee in charge of work.
✔✔Interlocking - ✔✔Signal appliances that are interconnected so that each of their
movements follows the other in a proper sequence. Interlockings may be operated
manually or automatically.
✔✔Interlocking Limits - ✔✔The tracks between outer opposing absolute signals of an
interlocking.
✔✔Interlocking Signals - ✔✔The fixed signals of an interlocking that govern trains using
interlocking limits.
✔✔Main Track - ✔✔A track extending through yards and between stations that must not
be occupied without authority or protection.
✔✔Men or Equipment - ✔✔A term referring to Engineering Department employees and
their related equipment.
✔✔Multiple Main Tracks - ✔✔Two or more main tracks that are used according to the
timetable.
✔✔Pilot - ✔✔An employee assigned to a train to assist an engineer or conductor who is
unfamiliar with the rules or the portion of railroad the train will operate on.
✔✔Proceed Indication - ✔✔Any block signal indication that allows a train to proceed
without stopping.
✔✔Radio - ✔✔As used in these rules it also applies to wireless
communication devices when used in railroad operation.
✔✔Radio Blocking - ✔✔A method to establish an absolute block for a following train in
non-signaled territory by direct communication with a preceding train.
✔✔Remote Control Operator (RCO) - ✔✔An employee who may operate an engine with
or without cars by means of a remote control transmitter.
✔✔Remote Control Transmitter - ✔✔A device that gives the remote control operator
control of a remote control engine.
, ✔✔Remote Control Zone (RCZ) - ✔✔A portion of track(s) within definite limits
designated in the timetable special instructions.
✔✔Restricted Limits - ✔✔A portion of main track designated by restricted limits signs
and timetable special instructions or a track bulletin.
✔✔Restricted Speed - ✔✔When required to move at restricted speed, movement must
be made at a speed that allows stopping within half the range of vision short of:
• Train.
• Engine.
• Railroad car.
• Men or equipment fouling the track.
• Stop signal.
or
• Derail or switch lined improperly.
When a train or engine is required to move at restricted speed, the crew must keep a
lookout for broken rail and not exceed 20 MPH.
Comply with these requirements until the leading wheels reach a point where movement
at restricted speed is no longer required. (HER)
✔✔Reverse Movement - ✔✔A movement opposite the authorized direction.
✔✔Siding - ✔✔A track connected to the main track and used for meeting or passing
trains. Location of sidings are shown in the timetable.
✔✔Signal Aspect - ✔✔The appearance of a fixed or cab signal.
✔✔Signal Indication - ✔✔The action required by the signal aspect.
✔✔Single Track - ✔✔A main track where trains are operated in both directions.
✔✔Special Instructions - ✔✔Instructions contained in the timetable or other
publication.
✔✔Spring Switch - ✔✔A switch with a spring mechanism that returns the
switch points to the original position after they are trailed through.
✔✔Station - ✔✔A place designated by name in the timetable station column.
✔✔Switch Point Indicator - ✔✔A light type indicator used during movement over certain
switches to show that switch points fit properly.
