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TPCB Professional Traffic Operations Engineer Practice Sample Questions:

1. A traffic signal timing plan includes a leading pedestrian interval (LPI) of 3 seconds. What is the primary purpose of the LPI?

A) To increase pedestrian visibility and safety
B) To extend the green phase
C) To reduce vehicle delay
D) To synchronize adjacent signals

2. The MUTCD specifies that a "No U-Turn" sign should be installed at an intersection where the turning radius is less than:

A) 60 feet
B) 50 feet
C) 30 feet
D) 40 feet

3. What is the purpose of a clearance interval in traffic signal timing?

A) To extend the green phase for high-volume traffic
B) To provide time for vehicles to clear the intersection before conflicting movements begin
C) To allow pedestrians to cross the intersection
D) To synchronize signals at adjacent intersections

4. What is the reciprocal of density?

A) Headway
B) Speed
C) Flow rate
D) Travel time

5. A freeway segment has a density of 70 vehicles per mile and a flow rate of 2,800 vehicles per hour. What is the space mean speed?

A) 35 mph
B) 45 mph
C) 40 mph
D) 50 mph

Solutions: