A traffic signal phase that permits vehicles to move in one direction while conflicting movements are stopped is known as a:
Correct answer: D. Protected phase
- A. Permissive phase
- B. Coordination phase
- C. Flashing phase
- D. Protected phase
Explanation
A protected phase gives a movement an exclusive right of way while conflicting traffic is stopped. A permissive phase allows movement only when suitable gaps are available in conflicting traffic.
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About Transportation Engineering
Transportation engineering covers highway planning and alignment, traffic studies, road geometric design, pavement materials and flexible or rigid pavement construction. It also includes railway, airport and traffic engineering concepts such as sight distance, superelevation, signals, capacity and level of service, distinguishing pavement failure from poor geometric design.
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