AZ L-69 Traffic Control Systems
Contractor Exam Questions And
Correct Answers (Verified Answers) Plus
Rationale2026 Q&A| Instant Download
Pdf
1. What is the primary purpose of a Traffic Control Plan (TCP)?
A. Improve construction crew productivity
B. Reduce project cost
C. Provide safe and efficient traffic movement through a work zone
D. Speed up work completion
Bold Italic Rationale: A Traffic Control Plan ensures public and worker
safety by coordinating traffic flow through construction zones.
2. Which document provides national standards for traffic control
devices?
A. FHWA Roadway Manual
B. MUTCD
C. OSHA Part 1926
D. DOT Road Guide
Bold Italic Rationale: The Manual on Uniform Traffic Control Devices
(MUTCD) governs all U.S. traffic control signs, signals, and markings.
3. A Type III barricade is primarily used for:
A. Lane dividers
B. Pedestrian detours
C. Road closures
,D. Work vehicle parking
Bold Italic Rationale: Type III barricades are the MUTCD-required device
for road closures.
4. Advance warning signs in work zones are typically placed at:
A. 50 ft spacing
B. 200 ft spacing
C. Variable spacing based on roadway speed
D. 20 ft intervals
Bold Italic Rationale: MUTCD requires spacing adjusted to roadway speed
for adequate driver reaction.
5. Which color is designated for temporary traffic control signs?
A. White
B. Blue
C. Orange
D. Yellow
Bold Italic Rationale: Orange signifies temporary traffic control for
construction and maintenance.
6. The taper length for lane closure on a high-speed roadway is based on:
A. Temperature
B. Time of day
C. Speed and lane width
D. Roadway material
Bold Italic Rationale: MUTCD taper length calculations use roadway speed
and lane width.
7. Flaggers must wear high-visibility apparel meeting:
A. ANSI Class 2 only
B. ANSI Class 2 or Class 3
C. Any reflective vest
D. OSHA Class A
Bold Italic Rationale: MUTCD and ANSI require Class 2 or 3 safety
apparel for flagging operations.
, 8. A flashing arrow panel in “merge” mode is used for:
A. Diverting pedestrians
B. Indicating road closure
C. Directing traffic to merge left or right
D. Speed control
Bold Italic Rationale: Merge mode provides directional guidance in lane
closures.
9. Which agency enforces work-zone worker safety requirements?
A. FHWA
B. OSHA
C. MUTCD
D. AASHTO
Bold Italic Rationale: OSHA regulates worker safety in construction zones.
10. A traffic signal head typically includes how many sections?
A. Two
B. Five
C. Three
D. Six
Bold Italic Rationale: Standard signal heads use red, yellow, and green
lenses.
11. Temporary pavement markings must be:
A. Bright green
B. Mixed colors
C. Retroreflective
D. Non-reflective
Bold Italic Rationale: Retroreflectivity is required for nighttime visibility in
work zones.
12. Channelizing devices must be at least:
Contractor Exam Questions And
Correct Answers (Verified Answers) Plus
Rationale2026 Q&A| Instant Download
1. What is the primary purpose of a Traffic Control Plan (TCP)?
A. Improve construction crew productivity
B. Reduce project cost
C. Provide safe and efficient traffic movement through a work zone
D. Speed up work completion
Bold Italic Rationale: A Traffic Control Plan ensures public and worker
safety by coordinating traffic flow through construction zones.
2. Which document provides national standards for traffic control
devices?
A. FHWA Roadway Manual
B. MUTCD
C. OSHA Part 1926
D. DOT Road Guide
Bold Italic Rationale: The Manual on Uniform Traffic Control Devices
(MUTCD) governs all U.S. traffic control signs, signals, and markings.
3. A Type III barricade is primarily used for:
A. Lane dividers
B. Pedestrian detours
C. Road closures
,D. Work vehicle parking
Bold Italic Rationale: Type III barricades are the MUTCD-required device
for road closures.
4. Advance warning signs in work zones are typically placed at:
A. 50 ft spacing
B. 200 ft spacing
C. Variable spacing based on roadway speed
D. 20 ft intervals
Bold Italic Rationale: MUTCD requires spacing adjusted to roadway speed
for adequate driver reaction.
5. Which color is designated for temporary traffic control signs?
A. White
B. Blue
C. Orange
D. Yellow
Bold Italic Rationale: Orange signifies temporary traffic control for
construction and maintenance.
6. The taper length for lane closure on a high-speed roadway is based on:
A. Temperature
B. Time of day
C. Speed and lane width
D. Roadway material
Bold Italic Rationale: MUTCD taper length calculations use roadway speed
and lane width.
7. Flaggers must wear high-visibility apparel meeting:
A. ANSI Class 2 only
B. ANSI Class 2 or Class 3
C. Any reflective vest
D. OSHA Class A
Bold Italic Rationale: MUTCD and ANSI require Class 2 or 3 safety
apparel for flagging operations.
, 8. A flashing arrow panel in “merge” mode is used for:
A. Diverting pedestrians
B. Indicating road closure
C. Directing traffic to merge left or right
D. Speed control
Bold Italic Rationale: Merge mode provides directional guidance in lane
closures.
9. Which agency enforces work-zone worker safety requirements?
A. FHWA
B. OSHA
C. MUTCD
D. AASHTO
Bold Italic Rationale: OSHA regulates worker safety in construction zones.
10. A traffic signal head typically includes how many sections?
A. Two
B. Five
C. Three
D. Six
Bold Italic Rationale: Standard signal heads use red, yellow, and green
lenses.
11. Temporary pavement markings must be:
A. Bright green
B. Mixed colors
C. Retroreflective
D. Non-reflective
Bold Italic Rationale: Retroreflectivity is required for nighttime visibility in
work zones.
12. Channelizing devices must be at least:
