NORAC Definitions ACTUAL UPDATED Questions and
CORRECT Answers
1. Absolute Block A block that must not be occupied by more than one train.
2. Authorized Busi- A purpose directly related to the tasks that an employee is expected to preform
ness Purpose during the current tour of duty, as specified by the railroad in writing.
3. Automatic Block A block signal that is activated either by track circuit or in conjunction with
Signal interlocking or controlled point circuits. This block signal automatically indicates
track condition and block occupancy.
4. Automatic Block A block signal system in which the use of each block is governed by an automatic
Signal System block signal, cab signal, or both.
(ABS)
5. Automatic Train A device on an engine which will cause a penalty application of the brakes if the
Stop (ATS) engineer fails to acknowledge a cab signal change to a more restrictive indication.
6. Avenue Ave
7. Block A length of track with defined limits on which train movements are governed by
block signals, cab signals, or Form D.
8. Block Signal A fixed signal displayed to trains at the entrance of a block to govern use of that
block.
9. Blocking Device A method of control that prohibits the operation of a switch or signal, restricts
access to a section of track or is used to protect conditions specific to operating
rules.
10. Blocking Device BDA
Applied
11. Blocking Device BDR
Removed
, NORAC Definitions ACTUAL UPDATED Questions and
CORRECT Answers
12. 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.
13. Bolt-Lock Switch A hand operated switch with a pipe connected locking that is designed to shunt
the signal system before switch points are operated.
14. Bulletin Order A publication used to notify employees of changes to rules, procedures, or other
(BO) instructions affecting the movement of trains. Bulletin Orders are issued period-
ically by the designated oflcer.
15. Cab Signal 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 inter-
locking signals and with or in lieu of block signals.
16. Cab Signal Sys- CSS
tem
17. Camp Car Any on-track vehicle, except a wreck train, that is used to house railroad or contract
employees.
18. Cars Railroad cars
19. Car Shop Repair One or more tracks within an area in which the testing, servicing, repairing,
Track Area inspecting, or rebuilding of cars is under exclusive control of mechanical depart-
ment personnel.
20. Conductor Cndr
21. Conductor and C&E
Engineer
22. Control Station The dispatcher's oflce or the location where the operator is on duty, from which
remote control signal appliances or switches are operated.
CORRECT Answers
1. Absolute Block A block that must not be occupied by more than one train.
2. Authorized Busi- A purpose directly related to the tasks that an employee is expected to preform
ness Purpose during the current tour of duty, as specified by the railroad in writing.
3. Automatic Block A block signal that is activated either by track circuit or in conjunction with
Signal interlocking or controlled point circuits. This block signal automatically indicates
track condition and block occupancy.
4. Automatic Block A block signal system in which the use of each block is governed by an automatic
Signal System block signal, cab signal, or both.
(ABS)
5. Automatic Train A device on an engine which will cause a penalty application of the brakes if the
Stop (ATS) engineer fails to acknowledge a cab signal change to a more restrictive indication.
6. Avenue Ave
7. Block A length of track with defined limits on which train movements are governed by
block signals, cab signals, or Form D.
8. Block Signal A fixed signal displayed to trains at the entrance of a block to govern use of that
block.
9. Blocking Device A method of control that prohibits the operation of a switch or signal, restricts
access to a section of track or is used to protect conditions specific to operating
rules.
10. Blocking Device BDA
Applied
11. Blocking Device BDR
Removed
, NORAC Definitions ACTUAL UPDATED Questions and
CORRECT Answers
12. 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.
13. Bolt-Lock Switch A hand operated switch with a pipe connected locking that is designed to shunt
the signal system before switch points are operated.
14. Bulletin Order A publication used to notify employees of changes to rules, procedures, or other
(BO) instructions affecting the movement of trains. Bulletin Orders are issued period-
ically by the designated oflcer.
15. Cab Signal 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 inter-
locking signals and with or in lieu of block signals.
16. Cab Signal Sys- CSS
tem
17. Camp Car Any on-track vehicle, except a wreck train, that is used to house railroad or contract
employees.
18. Cars Railroad cars
19. Car Shop Repair One or more tracks within an area in which the testing, servicing, repairing,
Track Area inspecting, or rebuilding of cars is under exclusive control of mechanical depart-
ment personnel.
20. Conductor Cndr
21. Conductor and C&E
Engineer
22. Control Station The dispatcher's oflce or the location where the operator is on duty, from which
remote control signal appliances or switches are operated.
