NORAC 300 | 2026 UPDATE | 302 QUESTIONS AND ANSWERS | WITH COMPLETE SOLUTION
Absolute Block: - (ANSWER)A block that must not be occupied by more than one train.
Automatic Block Signal - (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): - (ANSWER)A block signal system in which the use of each block is
governed by an automatic block signal, cab signal, or both.
Block - (ANSWER)A length of track with defined limits on which train movements are governed by block
signals, cab signals, or Form D.
Block Signal: - (ANSWER)A fixed signal displayed to trains at the entrance of a block to govern use of that
block.
Blue Signal - (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 - (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): - (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: - (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 - (ANSWER)The Dispatcher's office or the location where the Operator is on duty, from
which remote control signal appliances or switches are operated.
,NORAC 300 | 2026 UPDATE | 302 QUESTIONS AND ANSWERS | WITH COMPLETE SOLUTION
Controlled Point (CP): - (ANSWER)A station designated in the Timetable where signals are remotely
controlled from the control station.
Controlled Siding (CS) - (ANSWER)A circuited siding in which both ends are controlled and governed by
signals under the control of a Dispatcher or Operator.
Controlled Signal: - (ANSWER)A fixed signal, capable of displaying Stop indication, that is controlled by a
Dispatcher or Operator.
Crossing at Grade - (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: - (ANSWER)The assigned direction of movement on a Rule 251 main track, as specified
in the Timetable.
Derail: - (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 - (ANSWER)A fixed signal used to govern the approach of a train to a home signal.
Division Notice (DN): - (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 - (ANSWER)A power-operated switch also equipped for hand operation.
Effective Locking Device - (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.
,NORAC 300 | 2026 UPDATE | 302 QUESTIONS AND ANSWERS | WITH COMPLETE SOLUTION
Electrically Locked Switch: - (ANSWER)A hand-operated switch equipped with an electrically controlled
device that restricts the movement of the switch.
Employee in Charge (EIC) - (ANSWER)A qualified employee responsible for establishing protection for a
roadway worker or roadway workgroup.
Engine (Eng): - (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 - (ANSWER)A Train not designated by a Timetable schedule.
Fixed Signal: - (ANSWER)A signal at a fixed location that affects the movements of a train.
Form D Control System (DCS) - (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 - (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 - (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 - (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) - (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.
, NORAC 300 | 2026 UPDATE | 302 QUESTIONS AND ANSWERS | WITH COMPLETE SOLUTION
Hand-Operated Switch: - (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 - (ANSWER)A fixed signal governing entrance to an interlocking or controlled point.
Interlocking (Int) - (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 - (ANSWER)The tracks between the opposing home signals of an interlocking.
Interlocking Signals: - (ANSWER)The fixed signals of an interlocking.
Interlocking Station: - (ANSWER)A location from which an interlocking is operated
Main Track - (ANSWER)A track designated by Timetable upon which train movements are authorized by
ABS, DCS, or interlocking rules.
Marker: - (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 - (ANSWER)A frog with a moving alignment, allowing open flangeway for train
movement.
Movement Permit Form D - (ANSWER)A Form containing written authorization(s), restriction(s), or
instruction(s),
issued by the Dispatcher to specified individuals.
Personal Electronic Devices - (ANSWER)An electronic device that was not provided to the employee by
the railroad for an authorized business purpose.
Absolute Block: - (ANSWER)A block that must not be occupied by more than one train.
Automatic Block Signal - (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): - (ANSWER)A block signal system in which the use of each block is
governed by an automatic block signal, cab signal, or both.
Block - (ANSWER)A length of track with defined limits on which train movements are governed by block
signals, cab signals, or Form D.
Block Signal: - (ANSWER)A fixed signal displayed to trains at the entrance of a block to govern use of that
block.
Blue Signal - (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 - (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): - (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: - (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 - (ANSWER)The Dispatcher's office or the location where the Operator is on duty, from
which remote control signal appliances or switches are operated.
,NORAC 300 | 2026 UPDATE | 302 QUESTIONS AND ANSWERS | WITH COMPLETE SOLUTION
Controlled Point (CP): - (ANSWER)A station designated in the Timetable where signals are remotely
controlled from the control station.
Controlled Siding (CS) - (ANSWER)A circuited siding in which both ends are controlled and governed by
signals under the control of a Dispatcher or Operator.
Controlled Signal: - (ANSWER)A fixed signal, capable of displaying Stop indication, that is controlled by a
Dispatcher or Operator.
Crossing at Grade - (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: - (ANSWER)The assigned direction of movement on a Rule 251 main track, as specified
in the Timetable.
Derail: - (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 - (ANSWER)A fixed signal used to govern the approach of a train to a home signal.
Division Notice (DN): - (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 - (ANSWER)A power-operated switch also equipped for hand operation.
Effective Locking Device - (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.
,NORAC 300 | 2026 UPDATE | 302 QUESTIONS AND ANSWERS | WITH COMPLETE SOLUTION
Electrically Locked Switch: - (ANSWER)A hand-operated switch equipped with an electrically controlled
device that restricts the movement of the switch.
Employee in Charge (EIC) - (ANSWER)A qualified employee responsible for establishing protection for a
roadway worker or roadway workgroup.
Engine (Eng): - (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 - (ANSWER)A Train not designated by a Timetable schedule.
Fixed Signal: - (ANSWER)A signal at a fixed location that affects the movements of a train.
Form D Control System (DCS) - (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 - (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 - (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 - (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) - (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.
, NORAC 300 | 2026 UPDATE | 302 QUESTIONS AND ANSWERS | WITH COMPLETE SOLUTION
Hand-Operated Switch: - (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 - (ANSWER)A fixed signal governing entrance to an interlocking or controlled point.
Interlocking (Int) - (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 - (ANSWER)The tracks between the opposing home signals of an interlocking.
Interlocking Signals: - (ANSWER)The fixed signals of an interlocking.
Interlocking Station: - (ANSWER)A location from which an interlocking is operated
Main Track - (ANSWER)A track designated by Timetable upon which train movements are authorized by
ABS, DCS, or interlocking rules.
Marker: - (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 - (ANSWER)A frog with a moving alignment, allowing open flangeway for train
movement.
Movement Permit Form D - (ANSWER)A Form containing written authorization(s), restriction(s), or
instruction(s),
issued by the Dispatcher to specified individuals.
Personal Electronic Devices - (ANSWER)An electronic device that was not provided to the employee by
the railroad for an authorized business purpose.
