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TPCB Professional Traffic Operations Engineer Practice Sample Questions:

1. Per the AASHTO Roadside Design Guide, what is the preferred order for addressing a fixed roadside obstacle?

A) Shield, remove, relocate, make breakaway
B) Relocate, shield, remove, make breakaway
C) Make breakaway, shield, remove, relocate
D) Remove, relocate, make breakaway, shield

2. A traffic engineer calculates the present worth of a safety improvement costing $10,000 with annual benefits of $3,000 over 5 years at a 5% interest rate. What is the benefit-cost ratio?

A) 1.41
B) 1.56
C) 1.28
D) 1.15

3. What is the minimum length of a crest vertical curve on a road with a design speed of 60 mph, an algebraic difference in grades of 4%, and a K-value of 151, per AASHTO standards?

A) 755 feet
B) 604 feet
C) 1,057 feet
D) 906 feet

4. A traffic engineer is evaluating a freeway segment with a time mean speed of 60 mph and a variance of 25 mph². What is the space mean speed?

A) 58.2 mph
B) 57.5 mph
C) 60.0 mph
D) 59.0 mph

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

Solutions: