CERTIFIED WAYSIDE SIGNAL
MAINTAINER EXAM QUESTION AND
CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2026 Q&A
INSTANT DOWNLOAD PDF
1. What does a wayside signal primarily control?
A. Track temperature
B. Train movements
C. Passenger boarding
D. Wheel alignment
Rationale: Wayside signals regulate train movements to ensure safety
and efficiency.
2. What color typically indicates “Stop” on a signal?
A. Green
B. Red
C. Yellow
D. White
Rationale: Red universally signifies stop for safety.
3. A flashing yellow light indicates:
A. Proceed at full speed
B. Proceed with caution
C. Stop immediately
D. Reverse direction
Rationale: Flashing yellow means slow down and be prepared to stop.
4. Wayside signals communicate with trains via:
A. Horn blasts
B. GPS only
, C. Track circuits
D. Solar signals
Rationale: Track circuits detect train presence and relay signal info.
5. What is a signal maintainer’s first step before working on circuits?
A. Call dispatch
B. Take lunch
C. De-energize power
D. Change tools
Rationale: De-energizing power prevents electrical hazards.
6. A block signal protects:
A. A station platform
B. A section of track
C. Train wheels
D. Power cables
Rationale: Block signals divide track into protected sections.
7. What does a green signal mean?
A. Prepare to stop
B. Proceed
C. Move slowly
D. Reverse
Rationale: Green indicates clear track ahead.
8. Wayside signals are powered by:
A. Solar only
B. Electric circuits
C. Hydraulic fluids
D. Batteries only
Rationale: Most signals use electrical power systems.
9. A red over green signal means:
A. Clear track
B. Stop then proceed
C. Slow down
D. Use horn
Rationale: This combination requires stop then proceed with caution.
, 10.Which device detects train presence in a block?
A. Speedometer
B. Track circuit
C. Brake shoe
D. Wheel flange
Rationale: Track circuits sense trains in blocks.
11.Wayside signals help prevent:
A. Engine wear
B. Collisions
C. Ticket fraud
D. Crew fatigue
Rationale: They manage train spacing to avoid accidents.
12.A yellow signal generally means:
A. Full speed
B. Prepare to stop
C. Reverse
D. Turn lights off
Rationale: Yellow warns of upcoming restrictions.
13.A dark signal indication means:
A. Proceed
B. Stop
C. No indication
D. Flashing only
Rationale: Dark usually indicates failure or loss of power.
14.What should be checked first in a signal failure?
A. Tools
B. Power supply
C. Weather
D. Crew lunch
Rationale: Many failures start with power issues.
15.Wayside signals communicate status to:
A. Train engineers
B. Passengers
MAINTAINER EXAM QUESTION AND
CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2026 Q&A
INSTANT DOWNLOAD PDF
1. What does a wayside signal primarily control?
A. Track temperature
B. Train movements
C. Passenger boarding
D. Wheel alignment
Rationale: Wayside signals regulate train movements to ensure safety
and efficiency.
2. What color typically indicates “Stop” on a signal?
A. Green
B. Red
C. Yellow
D. White
Rationale: Red universally signifies stop for safety.
3. A flashing yellow light indicates:
A. Proceed at full speed
B. Proceed with caution
C. Stop immediately
D. Reverse direction
Rationale: Flashing yellow means slow down and be prepared to stop.
4. Wayside signals communicate with trains via:
A. Horn blasts
B. GPS only
, C. Track circuits
D. Solar signals
Rationale: Track circuits detect train presence and relay signal info.
5. What is a signal maintainer’s first step before working on circuits?
A. Call dispatch
B. Take lunch
C. De-energize power
D. Change tools
Rationale: De-energizing power prevents electrical hazards.
6. A block signal protects:
A. A station platform
B. A section of track
C. Train wheels
D. Power cables
Rationale: Block signals divide track into protected sections.
7. What does a green signal mean?
A. Prepare to stop
B. Proceed
C. Move slowly
D. Reverse
Rationale: Green indicates clear track ahead.
8. Wayside signals are powered by:
A. Solar only
B. Electric circuits
C. Hydraulic fluids
D. Batteries only
Rationale: Most signals use electrical power systems.
9. A red over green signal means:
A. Clear track
B. Stop then proceed
C. Slow down
D. Use horn
Rationale: This combination requires stop then proceed with caution.
, 10.Which device detects train presence in a block?
A. Speedometer
B. Track circuit
C. Brake shoe
D. Wheel flange
Rationale: Track circuits sense trains in blocks.
11.Wayside signals help prevent:
A. Engine wear
B. Collisions
C. Ticket fraud
D. Crew fatigue
Rationale: They manage train spacing to avoid accidents.
12.A yellow signal generally means:
A. Full speed
B. Prepare to stop
C. Reverse
D. Turn lights off
Rationale: Yellow warns of upcoming restrictions.
13.A dark signal indication means:
A. Proceed
B. Stop
C. No indication
D. Flashing only
Rationale: Dark usually indicates failure or loss of power.
14.What should be checked first in a signal failure?
A. Tools
B. Power supply
C. Weather
D. Crew lunch
Rationale: Many failures start with power issues.
15.Wayside signals communicate status to:
A. Train engineers
B. Passengers
