NORAC 300 UPDATED ACTUAL Questions and CORRECT
Answers
1. Absolute Block: A block that must not be occupied by more than
one train.
2. Automatic Block Signal A block signal that is activated either by track
circuit or in conjunction with interlocking or
controlled point circuits. This block signal au-
tomatically indicates track condition and block
occupancy.
3. Automatic Block Signal System (ABS): A block signal system in which the use of each
block is governed by an automatic block signal,
cab signal, or both.
4. Block A length of track with defined limits on which
train movements are governed by block signals,
cab signals, or Form D.
5. Block Signal: A fixed signal displayed to trains at the entrance
of a block to govern use of that block.
6. Blue Signal 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
7. Bolt-Lock Switch 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.
8. Bulletin Order (BO): A publication used to notify employees of
changes to rules, procedures, or other instruc-
tions affecting the movement of trains. Bulletin
, NORAC 300 UPDATED ACTUAL Questions and CORRECT
Answers
Orders are issued periodically by the designat-
ed oflcer.
9. Cab Signal: A signal that is located in the engine control
compartment and which indicates track occu-
pancy or condition. The cab signal is used in
conjunction with interlocking signals and with
or in lieu of block signals.
10. Control Station The Dispatcher's oflce or the location where
the Operator is on duty, from which remote
control signal appliances or switches are oper-
ated.
11. Controlled Point (CP): A station designated in the Timetable where
signals are remotely controlled from the control
station.
12. Controlled Siding (CS) A circuited siding in which both ends are con-
trolled and governed by signals under the con-
trol of a Dispatcher or Operator.
13. Controlled Signal: A fixed signal, capable of displaying Stop in-
dication, that is controlled by a Dispatcher or
Operator.
14. Crossing at Grade Two or more routes that intersect at the same
level. Crossing at Grade may refer to a railroad
or highway crossing at grade.
15. Current of Traffic: The assigned direction of movement on a Rule
251 main track, as specified in the Timetable.
16. Derail:
, 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.
17. Distant Signal A fixed signal used to govern the approach of a
train to a home signal.
18. Division Notice (DN): A publication issued periodically by the desig-
nated oflcer, which contains
instructions or information which do not affect
the movement of trains.
19. Dual Control Switch A power-operated switch also equipped for
hand operation.
20. Effective Locking Device A switch padlock that is vandal and tamper re-
sistant, and can be unlocked only by the class,
group or craft of employees that applied it.
21. Electrically Locked Switch: A hand-operated switch equipped with an elec-
trically controlled device that restricts the move-
ment of the switch.
22. Employee in Charge (EIC) A qualified employee responsible for establish-
ing protection for a roadway worker or roadway
workgroup.
23. Engine (Eng): 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.
24. Extra Train A Train not designated by a Timetable schedule.
, 25. Fixed Signal: A signal at a fixed location that affects the move-
ments of a train.
26. Form D Control System (DCS) A block system, signaled or non-signaled, in
which the movements of trains outside of the
yard limits is authorized by Form D.
27. Fouling a Track Being in such proximity to a track that an indi-
vidual, 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.
28. Fouling Point 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.
29. 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.
30. General Order (GO) 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 oflcer.
31. Hand-Operated Switch: Any type of switch when operated by manu-
al manipulation. Push button or radio control
operated switches are governed by the rules
for hand operated switches if the switches are
Answers
1. Absolute Block: A block that must not be occupied by more than
one train.
2. Automatic Block Signal A block signal that is activated either by track
circuit or in conjunction with interlocking or
controlled point circuits. This block signal au-
tomatically indicates track condition and block
occupancy.
3. Automatic Block Signal System (ABS): A block signal system in which the use of each
block is governed by an automatic block signal,
cab signal, or both.
4. Block A length of track with defined limits on which
train movements are governed by block signals,
cab signals, or Form D.
5. Block Signal: A fixed signal displayed to trains at the entrance
of a block to govern use of that block.
6. Blue Signal 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
7. Bolt-Lock Switch 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.
8. Bulletin Order (BO): A publication used to notify employees of
changes to rules, procedures, or other instruc-
tions affecting the movement of trains. Bulletin
, NORAC 300 UPDATED ACTUAL Questions and CORRECT
Answers
Orders are issued periodically by the designat-
ed oflcer.
9. Cab Signal: A signal that is located in the engine control
compartment and which indicates track occu-
pancy or condition. The cab signal is used in
conjunction with interlocking signals and with
or in lieu of block signals.
10. Control Station The Dispatcher's oflce or the location where
the Operator is on duty, from which remote
control signal appliances or switches are oper-
ated.
11. Controlled Point (CP): A station designated in the Timetable where
signals are remotely controlled from the control
station.
12. Controlled Siding (CS) A circuited siding in which both ends are con-
trolled and governed by signals under the con-
trol of a Dispatcher or Operator.
13. Controlled Signal: A fixed signal, capable of displaying Stop in-
dication, that is controlled by a Dispatcher or
Operator.
14. Crossing at Grade Two or more routes that intersect at the same
level. Crossing at Grade may refer to a railroad
or highway crossing at grade.
15. Current of Traffic: The assigned direction of movement on a Rule
251 main track, as specified in the Timetable.
16. Derail:
, 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.
17. Distant Signal A fixed signal used to govern the approach of a
train to a home signal.
18. Division Notice (DN): A publication issued periodically by the desig-
nated oflcer, which contains
instructions or information which do not affect
the movement of trains.
19. Dual Control Switch A power-operated switch also equipped for
hand operation.
20. Effective Locking Device A switch padlock that is vandal and tamper re-
sistant, and can be unlocked only by the class,
group or craft of employees that applied it.
21. Electrically Locked Switch: A hand-operated switch equipped with an elec-
trically controlled device that restricts the move-
ment of the switch.
22. Employee in Charge (EIC) A qualified employee responsible for establish-
ing protection for a roadway worker or roadway
workgroup.
23. Engine (Eng): 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.
24. Extra Train A Train not designated by a Timetable schedule.
, 25. Fixed Signal: A signal at a fixed location that affects the move-
ments of a train.
26. Form D Control System (DCS) A block system, signaled or non-signaled, in
which the movements of trains outside of the
yard limits is authorized by Form D.
27. Fouling a Track Being in such proximity to a track that an indi-
vidual, 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.
28. Fouling Point 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.
29. 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.
30. General Order (GO) 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 oflcer.
31. Hand-Operated Switch: Any type of switch when operated by manu-
al manipulation. Push button or radio control
operated switches are governed by the rules
for hand operated switches if the switches are
