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TPCB Professional Traffic Operations Engineer Practice Sample Questions:

1. If a two-way arterial street is converted to a one-way arterial street, which of the following is LEAST likely to occur?

A) Increased travel speeds
B) Reduced vehicle-miles of travel
C) Increased lane-change crashes
D) Reduced left-turn crashes at intersections

2. A signalized intersection has a cycle length of 90 seconds, with an effective green time of 30 seconds for the northbound approach. If the saturation flow rate is 1,800 vehicles per hour per lane and the approach has two lanes, what is the capacity of the northbound approach?

A) 1,800 vehicles/hour
B) 600 vehicles/hour
C) 2,400 vehicles/hour
D) 1,200 vehicles/hour

3. A traffic engineer conducted a study on a basic freeway segment. The average space mean speed was 30 mi/h.
The flow rate was 1,800 veh/h. What was the density of flow?

A) 45 veh/mi
B) 30 veh/mi
C) 75 veh/mi
D) 60 veh/mi

4. A professional engineer is asked to sign plans for a traffic signal design they did not supervise. According to the NCEES Model Rules, this action is:

A) Acceptable with client approval
B) Acceptable if the designer is a licensed engineer
C) An ethics violation
D) Acceptable if the engineer reviews the plans

5. For a signalized intersection with a pedestrian crossing distance of 80 feet and a pedestrian walking speed of
3.5 ft/s, what is the minimum pedestrian clearance interval, including a 3-second buffer?

A) 22 seconds
B) 25 seconds
C) 28 seconds
D) 31 seconds

Solutions: