UNION PACIFIC RAILROAD – CONDUCTOR FINAL EXAM BANK
300 CURRENTLY TESTING QUESTIONS &
FREQUENTLY TESTED TOPICS EXPERT VERIFIED | WITH
ANSWERS AND RATIONALES
TOPIC AREA COVERAGE:
1. GCOR Rules & Definitions (Q1–Q40)
2. Air Brake Systems (Q41–Q75)
3. Safety & Securement (Q76–Q110)
4. Signals & Communication (Q111–Q145)
5. Switching & Train Makeup (Q146–Q180)
6. Hours of Service (Q181–Q210)
7. Hazardous Materials (Q211–Q240)
8. Train Handling (Q241–Q265)
9. Personal Protective Equipment (Q266–Q280)
10. Inspections & Testing (Q281–Q300)
SECTION 1 – GCOR RULES & DEFINITIONS
to the rules hierarchy, which document has the HIGHEST authority
in the Union Pacific operating rule structure?
A) Service Unit General Order
B) General Notice
C) System General Order
D) Timetable Special Instructions
Correct Answer: C
Rationale: System General Orders are the highest-level authority and can
modify or supersede system special instructions. Service Unit orders and
general notices operate at lower levels.
Q2. What is the definition of a "Block" under GCOR?
A) A track designated by the timetable
B) A length of track between consecutive block signals or between a block
signal and the end of the block system limit
1
, C) Any track other than main track
D) A track where switching is performed
Correct Answer: B
Rationale: GCOR defines a block precisely as track between consecutive
block signals, or between a block signal and the end of the block system.
Q3. What does the "Good Faith Challenge" require of a conductor?
A) Follow all orders without question
B) Act with reasonable care and skill, exercising good judgment
C) Report any rule violation immediately
D) Refuse any unsafe assignment
Correct Answer: B
Rationale: Rule 1.1 (General Responsibilities) mandates the Good Faith
Challenge – employees must act with reasonable care, skill, and judgment
in all duties.
Q4. What is the difference between "signal aspect" and "signal indication"?
A) Aspect is the appearance; indication is the meaning
B) Aspect is the meaning; indication is the appearance
C) They are the same
D) Aspect applies only to cab signals
Correct Answer: A
Rationale: Under GCOR, aspect = physical appearance (color/position) of
the signal; indication = the instruction or meaning conveyed by that aspect.
Q5. Which of the following is NOT considered "Main Track"?
A) A track designated by the timetable as main track
B) A controlled siding used for passing
C) A yard track used for storage
D) A track between two block signals
2
, Correct Answer: C
Rationale: Main track is designated by timetable; yard tracks are
specifically excluded from main track definition.
Q6. "Restricted Speed" is defined as:
A) A speed not exceeding 15 MPH
B) A speed that allows stopping within one-half the range of vision
C) A speed not exceeding 10 MPH
D) Both B and looking out for track obstructions
Correct Answer: D (B and looking out for track obstructions)
Rationale: Restricted speed means a speed that permits stopping within
one-half the range of vision, and also allows looking out for broken
rail, switch position, and other obstructions.
Q7. Under GCOR, a "controlled signal" is:
A) Any fixed signal
B) A signal that can be controlled by a dispatcher or operator
C) A signal that displays only stop and proceed
D) Any signal with a number plate
Correct Answer: B
Rationale: A controlled signal is one that can be operated or controlled
by a dispatcher or control operator from a remote location.
Q8. When a train passes a signal displaying "Stop and Proceed", the crew must:
A) Stop completely, then proceed at restricted speed
B) Proceed at normal speed
C) Stop and wait for dispatcher authority
D) Proceed at restricted speed without stopping
Correct Answer: A
3
, Rationale: "Stop and Proceed" requires a full stop, then movement at
restricted speed until reaching the next signal or the end of the block.
Q9. What is a "siding"?
A) A track parallel to the main track for meeting/passing
B) A track in a yard
C) A track with a derail at both ends
D) A track used only for loading
Correct Answer: A
Rationale: A siding is a track auxiliary to the main track used for
meeting and passing trains, usually with controlled access.
Q10. The hierarchy of rules (highest to lowest) is:
A) System Special Instructions → Timetable → GCOR → General Orders
B) System General Orders → System Special Instructions → Timetable → GCOR
C) GCOR → System Special Instructions → Timetable → General Orders
D) Timetable → GCOR → System Special Instructions → General Orders
Correct Answer: B
Rationale: System General Orders top the hierarchy, followed by System
Special Instructions, then Timetable, then GCOR.
Q11. What does "fouling a track" mean?
A) A track that is out of service
B) Placing equipment so that it interferes with movement on another track
C) Cleaning the track surface
D) A track with restricted speed
Correct Answer: B
Rationale: Fouling a track means placing an object or equipment within
4 feet of the gauge of another track, interfering with movement.
4
300 CURRENTLY TESTING QUESTIONS &
FREQUENTLY TESTED TOPICS EXPERT VERIFIED | WITH
ANSWERS AND RATIONALES
TOPIC AREA COVERAGE:
1. GCOR Rules & Definitions (Q1–Q40)
2. Air Brake Systems (Q41–Q75)
3. Safety & Securement (Q76–Q110)
4. Signals & Communication (Q111–Q145)
5. Switching & Train Makeup (Q146–Q180)
6. Hours of Service (Q181–Q210)
7. Hazardous Materials (Q211–Q240)
8. Train Handling (Q241–Q265)
9. Personal Protective Equipment (Q266–Q280)
10. Inspections & Testing (Q281–Q300)
SECTION 1 – GCOR RULES & DEFINITIONS
to the rules hierarchy, which document has the HIGHEST authority
in the Union Pacific operating rule structure?
A) Service Unit General Order
B) General Notice
C) System General Order
D) Timetable Special Instructions
Correct Answer: C
Rationale: System General Orders are the highest-level authority and can
modify or supersede system special instructions. Service Unit orders and
general notices operate at lower levels.
Q2. What is the definition of a "Block" under GCOR?
A) A track designated by the timetable
B) A length of track between consecutive block signals or between a block
signal and the end of the block system limit
1
, C) Any track other than main track
D) A track where switching is performed
Correct Answer: B
Rationale: GCOR defines a block precisely as track between consecutive
block signals, or between a block signal and the end of the block system.
Q3. What does the "Good Faith Challenge" require of a conductor?
A) Follow all orders without question
B) Act with reasonable care and skill, exercising good judgment
C) Report any rule violation immediately
D) Refuse any unsafe assignment
Correct Answer: B
Rationale: Rule 1.1 (General Responsibilities) mandates the Good Faith
Challenge – employees must act with reasonable care, skill, and judgment
in all duties.
Q4. What is the difference between "signal aspect" and "signal indication"?
A) Aspect is the appearance; indication is the meaning
B) Aspect is the meaning; indication is the appearance
C) They are the same
D) Aspect applies only to cab signals
Correct Answer: A
Rationale: Under GCOR, aspect = physical appearance (color/position) of
the signal; indication = the instruction or meaning conveyed by that aspect.
Q5. Which of the following is NOT considered "Main Track"?
A) A track designated by the timetable as main track
B) A controlled siding used for passing
C) A yard track used for storage
D) A track between two block signals
2
, Correct Answer: C
Rationale: Main track is designated by timetable; yard tracks are
specifically excluded from main track definition.
Q6. "Restricted Speed" is defined as:
A) A speed not exceeding 15 MPH
B) A speed that allows stopping within one-half the range of vision
C) A speed not exceeding 10 MPH
D) Both B and looking out for track obstructions
Correct Answer: D (B and looking out for track obstructions)
Rationale: Restricted speed means a speed that permits stopping within
one-half the range of vision, and also allows looking out for broken
rail, switch position, and other obstructions.
Q7. Under GCOR, a "controlled signal" is:
A) Any fixed signal
B) A signal that can be controlled by a dispatcher or operator
C) A signal that displays only stop and proceed
D) Any signal with a number plate
Correct Answer: B
Rationale: A controlled signal is one that can be operated or controlled
by a dispatcher or control operator from a remote location.
Q8. When a train passes a signal displaying "Stop and Proceed", the crew must:
A) Stop completely, then proceed at restricted speed
B) Proceed at normal speed
C) Stop and wait for dispatcher authority
D) Proceed at restricted speed without stopping
Correct Answer: A
3
, Rationale: "Stop and Proceed" requires a full stop, then movement at
restricted speed until reaching the next signal or the end of the block.
Q9. What is a "siding"?
A) A track parallel to the main track for meeting/passing
B) A track in a yard
C) A track with a derail at both ends
D) A track used only for loading
Correct Answer: A
Rationale: A siding is a track auxiliary to the main track used for
meeting and passing trains, usually with controlled access.
Q10. The hierarchy of rules (highest to lowest) is:
A) System Special Instructions → Timetable → GCOR → General Orders
B) System General Orders → System Special Instructions → Timetable → GCOR
C) GCOR → System Special Instructions → Timetable → General Orders
D) Timetable → GCOR → System Special Instructions → General Orders
Correct Answer: B
Rationale: System General Orders top the hierarchy, followed by System
Special Instructions, then Timetable, then GCOR.
Q11. What does "fouling a track" mean?
A) A track that is out of service
B) Placing equipment so that it interferes with movement on another track
C) Cleaning the track surface
D) A track with restricted speed
Correct Answer: B
Rationale: Fouling a track means placing an object or equipment within
4 feet of the gauge of another track, interfering with movement.
4
