California Traffic Engineer Licensing
Exam Practice Test Questions And
Correct Answers (Verified Answers) Plus
Rationales 2025 Q&A | Instant
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1. What is the primary purpose of the Manual on Uniform Traffic Control
Devices (MUTCD)?
A. Determine road classifications
B. Establish standards for traffic signs, signals, and markings
C. Enforce vehicle codes
D. Set vehicle emission guidelines
The MUTCD standardizes traffic control devices to ensure consistency
and safety across U.S. roadways.
2. What is the minimum time for the yellow signal interval on a 45 mph
approach?
A. 3.0 seconds
B. 3.5 seconds
C. 4.5 seconds
D. 5.0 seconds
Yellow intervals are based on approach speed; 4.5 seconds is
appropriate for 45 mph.
,3. What is a common cause of rear-end collisions at signalized
intersections?
A. High visibility
B. Short yellow intervals
C. Long red intervals
D. Overhead signage
Short yellow intervals can lead to abrupt stops, increasing rear-end
crashes.
4. The term "85th percentile speed" refers to:
A. Average speed of traffic
B. Speed at or below which 85% of drivers travel
C. Posted speed limit
D. Maximum legal speed
The 85th percentile speed is commonly used for setting speed limits.
5. What is the primary benefit of a roundabout?
A. Increases pedestrian crossing distance
B. Encourages higher speeds
C. Reduces conflict points
D. Requires more right-of-way
Roundabouts reduce crash severity by eliminating angle and head-on
conflicts.
6. What is the stopping sight distance for a vehicle traveling at 55 mph
on a level roadway?
A. 200 feet
B. 495 feet
C. 600 feet
D. 1000 feet
Based on AASHTO guidelines, the stopping sight distance for 55 mph
is about 495 feet.
, 7. Which traffic signal control type adjusts to real-time traffic conditions?
A. Pretimed
B. Time-of-day
C. Fully actuated
D. Flashing
Fully actuated signals adjust timing based on detector input.
8. What is the peak hour factor (PHF)?
A. Ratio of flow to capacity
B. Average hourly volume
C. Measure of flow variation within the peak hour
D. Delay due to congestion
PHF reflects traffic demand fluctuation, helping assess true peak
congestion.
9. What is the function of a leading pedestrian interval (LPI)?
A. Reduce driver delay
B. Give pedestrians a head start before vehicles turn
C. Increase vehicle throughput
D. Encourage jaywalking
LPIs improve pedestrian visibility and safety at intersections.
10. When is a two-way left-turn lane appropriate?
A. On freeways
B. On multilane arterials with frequent access points
C. In residential zones
D. On rural highways
Two-way left-turn lanes help manage turning traffic on busy urban
arterials.
Exam Practice Test Questions And
Correct Answers (Verified Answers) Plus
Rationales 2025 Q&A | Instant
Download Pdf
1. What is the primary purpose of the Manual on Uniform Traffic Control
Devices (MUTCD)?
A. Determine road classifications
B. Establish standards for traffic signs, signals, and markings
C. Enforce vehicle codes
D. Set vehicle emission guidelines
The MUTCD standardizes traffic control devices to ensure consistency
and safety across U.S. roadways.
2. What is the minimum time for the yellow signal interval on a 45 mph
approach?
A. 3.0 seconds
B. 3.5 seconds
C. 4.5 seconds
D. 5.0 seconds
Yellow intervals are based on approach speed; 4.5 seconds is
appropriate for 45 mph.
,3. What is a common cause of rear-end collisions at signalized
intersections?
A. High visibility
B. Short yellow intervals
C. Long red intervals
D. Overhead signage
Short yellow intervals can lead to abrupt stops, increasing rear-end
crashes.
4. The term "85th percentile speed" refers to:
A. Average speed of traffic
B. Speed at or below which 85% of drivers travel
C. Posted speed limit
D. Maximum legal speed
The 85th percentile speed is commonly used for setting speed limits.
5. What is the primary benefit of a roundabout?
A. Increases pedestrian crossing distance
B. Encourages higher speeds
C. Reduces conflict points
D. Requires more right-of-way
Roundabouts reduce crash severity by eliminating angle and head-on
conflicts.
6. What is the stopping sight distance for a vehicle traveling at 55 mph
on a level roadway?
A. 200 feet
B. 495 feet
C. 600 feet
D. 1000 feet
Based on AASHTO guidelines, the stopping sight distance for 55 mph
is about 495 feet.
, 7. Which traffic signal control type adjusts to real-time traffic conditions?
A. Pretimed
B. Time-of-day
C. Fully actuated
D. Flashing
Fully actuated signals adjust timing based on detector input.
8. What is the peak hour factor (PHF)?
A. Ratio of flow to capacity
B. Average hourly volume
C. Measure of flow variation within the peak hour
D. Delay due to congestion
PHF reflects traffic demand fluctuation, helping assess true peak
congestion.
9. What is the function of a leading pedestrian interval (LPI)?
A. Reduce driver delay
B. Give pedestrians a head start before vehicles turn
C. Increase vehicle throughput
D. Encourage jaywalking
LPIs improve pedestrian visibility and safety at intersections.
10. When is a two-way left-turn lane appropriate?
A. On freeways
B. On multilane arterials with frequent access points
C. In residential zones
D. On rural highways
Two-way left-turn lanes help manage turning traffic on busy urban
arterials.
