COLORADO STREET LIGHTING TECHNICIAN
CERTIFICATION EXAM AND CORRECT ANSWERS
(VERIFIED ANSWERS) Q&A 2026 |INSTANT
DOWNOAD PDF
1. What is the primary purpose of street lighting systems?
A. To increase electricity consumption
B. To improve road safety and visibility at night
C. To power traffic lights
D. To decorate roads
Rationale: Street lighting is designed to enhance visibility,
reduce accidents, and improve public safety during low-light
conditions.
Correct Answer: B
2. Which electrical component is commonly used to control
street lights automatically?
A. Transformer
B. Photocell
C. Circuit breaker
D. Resistor
,Rationale: A photocell detects ambient light levels and switches
street lights on or off accordingly.
Correct Answer: B
3. What voltage range is commonly used in street lighting
systems?
A. 5V–12V
B. 24V–48V
C. 120V–480V
D. 1000V–5000V
Rationale: Street lighting typically operates on standard
distribution voltages such as 120V, 240V, or higher depending
on the system.
Correct Answer: C
4. What is the function of a ballast in a street light system?
A. Increase voltage stability
B. Limit current to the lamp
C. Store electrical energy
D. Convert AC to DC
Rationale: Ballasts regulate current to prevent damage to
discharge lamps like HID or sodium vapor lamps.
Correct Answer: B
,5. Which type of lamp is most energy-efficient for modern
street lighting?
A. Incandescent
B. Halogen
C. LED
D. Fluorescent tube
Rationale: LEDs consume less power and have longer lifespans
compared to traditional lighting technologies.
Correct Answer: C
6. What safety equipment is essential for street lighting
technicians?
A. Sunglasses
B. Rubber gloves and insulated tools
C. Earphones
D. Steel ruler
Rationale: Electrical PPE such as insulated gloves protects
technicians from electric shock hazards.
Correct Answer: B
7. What does a circuit breaker do in a lighting system?
A. Stores electricity
B. Increases brightness
, C. Protects circuits from overload
D. Converts light to electricity
Rationale: Circuit breakers automatically disconnect power
during overload or fault conditions.
Correct Answer: C
8. What is a common cause of street light failure?
A. Excess daylight
B. Faulty wiring or lamp burnout
C. Too much insulation
D. High wind only
Rationale: Electrical faults and lamp end-of-life are the most
common causes of failure.
Correct Answer: B
9. What is the role of a transformer in street lighting systems?
A. Converts light into electricity
B. Steps voltage up or down
C. Stores power
D. Measures current
Rationale: Transformers adjust voltage levels for safe and
efficient distribution.
Correct Answer: B
CERTIFICATION EXAM AND CORRECT ANSWERS
(VERIFIED ANSWERS) Q&A 2026 |INSTANT
DOWNOAD PDF
1. What is the primary purpose of street lighting systems?
A. To increase electricity consumption
B. To improve road safety and visibility at night
C. To power traffic lights
D. To decorate roads
Rationale: Street lighting is designed to enhance visibility,
reduce accidents, and improve public safety during low-light
conditions.
Correct Answer: B
2. Which electrical component is commonly used to control
street lights automatically?
A. Transformer
B. Photocell
C. Circuit breaker
D. Resistor
,Rationale: A photocell detects ambient light levels and switches
street lights on or off accordingly.
Correct Answer: B
3. What voltage range is commonly used in street lighting
systems?
A. 5V–12V
B. 24V–48V
C. 120V–480V
D. 1000V–5000V
Rationale: Street lighting typically operates on standard
distribution voltages such as 120V, 240V, or higher depending
on the system.
Correct Answer: C
4. What is the function of a ballast in a street light system?
A. Increase voltage stability
B. Limit current to the lamp
C. Store electrical energy
D. Convert AC to DC
Rationale: Ballasts regulate current to prevent damage to
discharge lamps like HID or sodium vapor lamps.
Correct Answer: B
,5. Which type of lamp is most energy-efficient for modern
street lighting?
A. Incandescent
B. Halogen
C. LED
D. Fluorescent tube
Rationale: LEDs consume less power and have longer lifespans
compared to traditional lighting technologies.
Correct Answer: C
6. What safety equipment is essential for street lighting
technicians?
A. Sunglasses
B. Rubber gloves and insulated tools
C. Earphones
D. Steel ruler
Rationale: Electrical PPE such as insulated gloves protects
technicians from electric shock hazards.
Correct Answer: B
7. What does a circuit breaker do in a lighting system?
A. Stores electricity
B. Increases brightness
, C. Protects circuits from overload
D. Converts light to electricity
Rationale: Circuit breakers automatically disconnect power
during overload or fault conditions.
Correct Answer: C
8. What is a common cause of street light failure?
A. Excess daylight
B. Faulty wiring or lamp burnout
C. Too much insulation
D. High wind only
Rationale: Electrical faults and lamp end-of-life are the most
common causes of failure.
Correct Answer: B
9. What is the role of a transformer in street lighting systems?
A. Converts light into electricity
B. Steps voltage up or down
C. Stores power
D. Measures current
Rationale: Transformers adjust voltage levels for safe and
efficient distribution.
Correct Answer: B
