In traffic engineering, the capacity of a roadway is best defined as the maximum number of vehicles that can pass a point during a specified period under:
Correct answer: D. Specified prevailing roadway and traffic conditions
- A. A completely empty network
- B. Only free-flow speed conditions
- C. The highest possible tyre pressure
- D. Specified prevailing roadway and traffic conditions
Explanation
Capacity is the maximum sustainable flow under specified roadway, traffic and control conditions. It is not simply the flow observed when traffic is moving at free-flow speed.
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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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