NORAC 300 EXAM QUESTIONS AND ANSWERS
Absolute Block: - CORRECT ANSWER✅✅A block that must not be occupied by more than one train.
Automatic Block Signal - CORRECT ANSWER✅✅A block signal that is activated either by track circuit or
in conjunction with interlocking or controlled point circuits. This block signal automatically indicates
track condition and block occupancy.
Automatic Block Signal System (ABS): - CORRECT ANSWER✅✅A block signal system in which the use of
each block is governed by an automatic block signal, cab signal, or both.
Block - CORRECT ANSWER✅✅A length of track with defined limits on which train movements are
governed by block signals, cab signals, or Form D.
Block Signal: - CORRECT ANSWER✅✅A fixed signal displayed to trains at the entrance of a block to
govern use of that block.
Blue Signal - CORRECT ANSWER✅✅A clearly distinguishable blue flag, blue light or blue tag by day, or a
blue light or blue tag by
night. When displayed, it signifies that workers are on, under or between equipment
Bolt-Lock Switch - CORRECT ANSWER✅✅A hand-operated switch equipped with a pipe connected
locking device that is designed to shunt the signal system before the switch points are operated.
Bulletin Order (BO): - CORRECT ANSWER✅✅A publication used to notify employees of changes to rules,
procedures, or other instructions affecting the movement of trains. Bulletin Orders are issued
periodically by the designated officer.
Cab Signal: - CORRECT ANSWER✅✅A signal that is located in the engine control compartment and
which indicates track occupancy or condition. The cab signal is used in conjunction with interlocking
signals and with or in lieu of block signals.
,Control Station - CORRECT ANSWER✅✅The Dispatcher's office or the location where the Operator is on
duty, from which remote control signal appliances or switches are operated.
Controlled Point (CP): - CORRECT ANSWER✅✅A station designated in the Timetable where signals are
remotely controlled from the control station.
Controlled Siding (CS) - CORRECT ANSWER✅✅A circuited siding in which both ends are controlled and
governed by signals under the control of a Dispatcher or Operator.
Controlled Signal: - CORRECT ANSWER✅✅A fixed signal, capable of displaying Stop indication, that is
controlled by a Dispatcher or Operator.
Crossing at Grade - CORRECT ANSWER✅✅Two or more routes that intersect at the same level. Crossing
at Grade may refer to a railroad or highway crossing at grade.
Current of Traffic: - CORRECT ANSWER✅✅The assigned direction of movement on a Rule 251 main
track, as specified in the Timetable.
Derail: - CORRECT ANSWER✅✅A track safety device, designed to guide a car off the rails at a selected
spot as a means of protection against collisions or other accidents.
Distant Signal - CORRECT ANSWER✅✅A fixed signal used to govern the approach of a train to a home
signal.
Division Notice (DN): - CORRECT ANSWER✅✅A publication issued periodically by the designated officer,
which contains
instructions or information which do not affect the movement of trains.
Dual Control Switch - CORRECT ANSWER✅✅A power-operated switch also equipped for hand
operation.
,Effective Locking Device - CORRECT ANSWER✅✅A switch padlock that is vandal and tamper resistant,
and can be unlocked only by the class, group or craft of employees that applied it.
Electrically Locked Switch: - CORRECT ANSWER✅✅A hand-operated switch equipped with an
electrically controlled device that restricts the movement of the switch.
Employee in Charge (EIC) - CORRECT ANSWER✅✅A qualified employee responsible for establishing
protection for a roadway worker or roadway workgroup.
Engine (Eng): - CORRECT ANSWER✅✅A unit or combination of units propelled by any form of energy
and operated from a single control, used in train or yard service. The word "engine" may also be used to
identify control cars.
Extra Train - CORRECT ANSWER✅✅A Train not designated by a Timetable schedule.
Fixed Signal: - CORRECT ANSWER✅✅A signal at a fixed location that affects the movements of a train.
Form D Control System (DCS) - CORRECT ANSWER✅✅A block system, signaled or non-signaled, in which
the movements of trains outside of the yard limits is authorized by Form D.
Fouling a Track - CORRECT ANSWER✅✅Being in such proximity to a track that an individual, tools or
equipment could be struck by a moving train or other on-track equipment, or in any case is within four
feet of the nearest rail.
Fouling Point - CORRECT ANSWER✅✅The point on a track beyond which equipment will foul an
adjacent track. Fouling points will not safely accommodate a person riding the side of a car.
Foul Time - CORRECT ANSWER✅✅A method of establishing working limits on a controlled track when
work will not disturb the track or catenary structure in a manner that would prevent movements at
Normal Speed.
, General Order (GO) - CORRECT ANSWER✅✅A publication used to summarize changes to the Timetable
and other instruction manuals. General Orders contain revision pages and are issued periodically by the
designated officer.
Hand-Operated Switch: - CORRECT ANSWER✅✅Any type of switch when operated by manual
manipulation. Push button or radio control operated switches are governed by the rules for hand
operated switches if the switches are not equipped with a signal or switch position indicator light.
Home Signal - CORRECT ANSWER✅✅A fixed signal governing entrance to an interlocking or controlled
point.
Interlocking (Int) - CORRECT ANSWER✅✅: An interconnection of signals and signal appliances such that
their movements must succeed each other in a predetermined sequence, assuring that signals cannot be
displayed simultaneously on conflicting routes. Interlocking rules are in effect in an interlocking.
Interlocking Limits - CORRECT ANSWER✅✅The tracks between the opposing home signals of an
interlocking.
Interlocking Signals: - CORRECT ANSWER✅✅The fixed signals of an interlocking.
Interlocking Station: - CORRECT ANSWER✅✅A location from which an interlocking is operated
Main Track - CORRECT ANSWER✅✅A track designated by Timetable upon which train movements are
authorized by ABS, DCS, or interlocking rules.
Marker: - CORRECT ANSWER✅✅: A reflector, flag, or highly visible marking device, in the red-orange-
amber color range, affixed to the rear of a train to indicate that the train is complete.
Movable Point Frog - CORRECT ANSWER✅✅A frog with a moving alignment, allowing open flangeway
for train movement.
Absolute Block: - CORRECT ANSWER✅✅A block that must not be occupied by more than one train.
Automatic Block Signal - CORRECT ANSWER✅✅A block signal that is activated either by track circuit or
in conjunction with interlocking or controlled point circuits. This block signal automatically indicates
track condition and block occupancy.
Automatic Block Signal System (ABS): - CORRECT ANSWER✅✅A block signal system in which the use of
each block is governed by an automatic block signal, cab signal, or both.
Block - CORRECT ANSWER✅✅A length of track with defined limits on which train movements are
governed by block signals, cab signals, or Form D.
Block Signal: - CORRECT ANSWER✅✅A fixed signal displayed to trains at the entrance of a block to
govern use of that block.
Blue Signal - CORRECT ANSWER✅✅A clearly distinguishable blue flag, blue light or blue tag by day, or a
blue light or blue tag by
night. When displayed, it signifies that workers are on, under or between equipment
Bolt-Lock Switch - CORRECT ANSWER✅✅A hand-operated switch equipped with a pipe connected
locking device that is designed to shunt the signal system before the switch points are operated.
Bulletin Order (BO): - CORRECT ANSWER✅✅A publication used to notify employees of changes to rules,
procedures, or other instructions affecting the movement of trains. Bulletin Orders are issued
periodically by the designated officer.
Cab Signal: - CORRECT ANSWER✅✅A signal that is located in the engine control compartment and
which indicates track occupancy or condition. The cab signal is used in conjunction with interlocking
signals and with or in lieu of block signals.
,Control Station - CORRECT ANSWER✅✅The Dispatcher's office or the location where the Operator is on
duty, from which remote control signal appliances or switches are operated.
Controlled Point (CP): - CORRECT ANSWER✅✅A station designated in the Timetable where signals are
remotely controlled from the control station.
Controlled Siding (CS) - CORRECT ANSWER✅✅A circuited siding in which both ends are controlled and
governed by signals under the control of a Dispatcher or Operator.
Controlled Signal: - CORRECT ANSWER✅✅A fixed signal, capable of displaying Stop indication, that is
controlled by a Dispatcher or Operator.
Crossing at Grade - CORRECT ANSWER✅✅Two or more routes that intersect at the same level. Crossing
at Grade may refer to a railroad or highway crossing at grade.
Current of Traffic: - CORRECT ANSWER✅✅The assigned direction of movement on a Rule 251 main
track, as specified in the Timetable.
Derail: - CORRECT ANSWER✅✅A track safety device, designed to guide a car off the rails at a selected
spot as a means of protection against collisions or other accidents.
Distant Signal - CORRECT ANSWER✅✅A fixed signal used to govern the approach of a train to a home
signal.
Division Notice (DN): - CORRECT ANSWER✅✅A publication issued periodically by the designated officer,
which contains
instructions or information which do not affect the movement of trains.
Dual Control Switch - CORRECT ANSWER✅✅A power-operated switch also equipped for hand
operation.
,Effective Locking Device - CORRECT ANSWER✅✅A switch padlock that is vandal and tamper resistant,
and can be unlocked only by the class, group or craft of employees that applied it.
Electrically Locked Switch: - CORRECT ANSWER✅✅A hand-operated switch equipped with an
electrically controlled device that restricts the movement of the switch.
Employee in Charge (EIC) - CORRECT ANSWER✅✅A qualified employee responsible for establishing
protection for a roadway worker or roadway workgroup.
Engine (Eng): - CORRECT ANSWER✅✅A unit or combination of units propelled by any form of energy
and operated from a single control, used in train or yard service. The word "engine" may also be used to
identify control cars.
Extra Train - CORRECT ANSWER✅✅A Train not designated by a Timetable schedule.
Fixed Signal: - CORRECT ANSWER✅✅A signal at a fixed location that affects the movements of a train.
Form D Control System (DCS) - CORRECT ANSWER✅✅A block system, signaled or non-signaled, in which
the movements of trains outside of the yard limits is authorized by Form D.
Fouling a Track - CORRECT ANSWER✅✅Being in such proximity to a track that an individual, tools or
equipment could be struck by a moving train or other on-track equipment, or in any case is within four
feet of the nearest rail.
Fouling Point - CORRECT ANSWER✅✅The point on a track beyond which equipment will foul an
adjacent track. Fouling points will not safely accommodate a person riding the side of a car.
Foul Time - CORRECT ANSWER✅✅A method of establishing working limits on a controlled track when
work will not disturb the track or catenary structure in a manner that would prevent movements at
Normal Speed.
, General Order (GO) - CORRECT ANSWER✅✅A publication used to summarize changes to the Timetable
and other instruction manuals. General Orders contain revision pages and are issued periodically by the
designated officer.
Hand-Operated Switch: - CORRECT ANSWER✅✅Any type of switch when operated by manual
manipulation. Push button or radio control operated switches are governed by the rules for hand
operated switches if the switches are not equipped with a signal or switch position indicator light.
Home Signal - CORRECT ANSWER✅✅A fixed signal governing entrance to an interlocking or controlled
point.
Interlocking (Int) - CORRECT ANSWER✅✅: An interconnection of signals and signal appliances such that
their movements must succeed each other in a predetermined sequence, assuring that signals cannot be
displayed simultaneously on conflicting routes. Interlocking rules are in effect in an interlocking.
Interlocking Limits - CORRECT ANSWER✅✅The tracks between the opposing home signals of an
interlocking.
Interlocking Signals: - CORRECT ANSWER✅✅The fixed signals of an interlocking.
Interlocking Station: - CORRECT ANSWER✅✅A location from which an interlocking is operated
Main Track - CORRECT ANSWER✅✅A track designated by Timetable upon which train movements are
authorized by ABS, DCS, or interlocking rules.
Marker: - CORRECT ANSWER✅✅: A reflector, flag, or highly visible marking device, in the red-orange-
amber color range, affixed to the rear of a train to indicate that the train is complete.
Movable Point Frog - CORRECT ANSWER✅✅A frog with a moving alignment, allowing open flangeway
for train movement.
