Signals Study Guide Railroad Signal
Aspects Indications and Operating Rules
(2 Files)
Questions 1–20
1. A solid red signal aspect means:
A. Proceed with caution
B. Stop
C. Approach next signal
D. Restricted speed
Answer: B
Solution: A red signal is an absolute stop indication unless otherwise specified by rule.
2. A flashing yellow signal indicates:
A. Stop and proceed
B. Advance approach
,C. Clear
D. Restricted speed
Answer: B
Solution: Flashing yellow warns of a more restrictive signal ahead (usually stop).
3. A green signal aspect means:
A. Stop
B. Proceed at restricted speed
C. Proceed
D. Prepare to stop
Answer: C
Solution: Green indicates the track ahead is clear—full authorized speed allowed.
4. What does “Approach” signal mean?
A. Proceed at full speed
B. Prepare to stop at next signal
C. Stop immediately
D. Reverse direction
Answer: B
Solution: Approach requires speed reduction and readiness to stop.
5. A flashing green signal indicates:
A. Clear to next signal
B. Advance clear to second signal
C. Stop
D. Restricted speed
Answer: B
Solution: Flashing green typically means “Advance Clear”—next signal is clear.
6. What is “Restricted Speed”?
A. Maximum track speed
B. Speed allowing stopping within half range of vision
C. Walking speed only
D. Emergency speed
, Answer: B
Solution: Trains must stop within half the visible distance to avoid hazards.
7. A yellow signal means:
A. Stop
B. Proceed
C. Proceed, prepared to stop
D. Reverse
Answer: C
Solution: Yellow = caution; expect a stop signal ahead.
8. A lunar white signal typically indicates:
A. Clear
B. Restricting
C. Stop
D. High speed
Answer: B
Solution: Lunar white often corresponds to restricted movement.
9. “Stop and Proceed” means:
A. Pass signal without stopping
B. Stop, then proceed at restricted speed
C. Stop permanently
D. Reverse
Answer: B
Solution: Train must stop first, then move cautiously.
10. What does a dark signal (no lights) mean?
A. Clear
B. Stop
C. Proceed at full speed
D. Ignore
Answer: B
Solution: A signal with no light must be treated as the most restrictive—STOP.