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TPCB Professional Traffic Operations Engineer Practice Sample Questions:

1. For a signalized intersection with a 100-second cycle length, what is the effective green time for an approach with a green time of 40 seconds and a lost time of 4 seconds?

A) 36 seconds
B) 40 seconds
C) 34 seconds
D) 38 seconds

2. A conflict of interest is best addressed by:

A) Handling the decision with the utmost confidentiality
B) Immediately notify the state board of the conflict of interest
C) Disclosing the situation and discussing the need for recusal with an engineering supervisor
D) Always disclosing the situation and recusing yourself

3. 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) 28 seconds
C) 31 seconds
D) 22 seconds

4. Which of the following is not a reason professionals must adhere to a code of ethics?

A) Professions are self-regulating
B) Professions are responsible for training other professionals
C) Professionals have autonomy
D) Professionals receive above-average compensation

5. What does the term "Level of Service" (LOS) describe in traffic engineering?

A) A qualitative measure of traffic flow and congestion
B) The speed limit of a roadway
C) The frequency of traffic signal maintenance
D) The number of lanes on a highway

Solutions: