NORAC 300 EXAM WITH QUESTIONS AND ANSWERS
LATEST UPDATE
Absolute Block: - ANSWER A block which, under normal conditions cannot be occupied
by more than one train.
Automatic Block Signal - ANSWER A block signal which 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.
ABS (Automatic Block Signal System): A block signal system in which the use of each
block is governed by an automatic block signal, cab signal, or both.
Block - 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 provided with a pipe connected
locking device designed to shunt the signal system before the switch points are
operated.
Bulletin Order (BO): - ANSWER A notice to employees advising of a change in the 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.
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 which cross at the same level.
Crossing at Grade may refer to a railroad or highway crossing at grade.
Current of Traffic: - ANSWER The direction of movement designated to take precedence
on a Rule 251 main track, as provided in the Timetable.
DERAILED - 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 govern train movement.
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.
Electrically Locked Switch: - ANSWER A hand-operated switch with an electrically
operated mechanism that can prevent the switch from being moved.
Employee in Charge (EIC) - ANSWER An employee assigned by the railroad and charged
with the responsibility for the safety of one or more roadway workers, for establishing
protection with the train dispatcher when necessary for their protection, or for
determining whether their tasks can be safely performed with the movement of trains.
Engine (Eng): - ANSWER A unit or 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 governs 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 A 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 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.
GO-General Order 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: - 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 place from which an interlocking is actuated
LATEST UPDATE
Absolute Block: - ANSWER A block which, under normal conditions cannot be occupied
by more than one train.
Automatic Block Signal - ANSWER A block signal which 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.
ABS (Automatic Block Signal System): A block signal system in which the use of each
block is governed by an automatic block signal, cab signal, or both.
Block - 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 provided with a pipe connected
locking device designed to shunt the signal system before the switch points are
operated.
Bulletin Order (BO): - ANSWER A notice to employees advising of a change in the 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.
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 which cross at the same level.
Crossing at Grade may refer to a railroad or highway crossing at grade.
Current of Traffic: - ANSWER The direction of movement designated to take precedence
on a Rule 251 main track, as provided in the Timetable.
DERAILED - 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 govern train movement.
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.
Electrically Locked Switch: - ANSWER A hand-operated switch with an electrically
operated mechanism that can prevent the switch from being moved.
Employee in Charge (EIC) - ANSWER An employee assigned by the railroad and charged
with the responsibility for the safety of one or more roadway workers, for establishing
protection with the train dispatcher when necessary for their protection, or for
determining whether their tasks can be safely performed with the movement of trains.
Engine (Eng): - ANSWER A unit or 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 governs 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 A 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 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.
GO-General Order 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: - 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 place from which an interlocking is actuated
