The main purpose of converting different vehicle types into passenger car units is to:
Correct answer: A. Express mixed traffic as an equivalent passenger-car flow
- A. Express mixed traffic as an equivalent passenger-car flow
- B. Estimate pavement layer thickness directly
- C. Determine the legal speed limit on a road
- D. Calculate the axle load of a heavy vehicle
Explanation
Passenger car units provide a common measure for traffic streams containing cars, buses, trucks and other vehicles. They are mainly used in capacity and traffic-flow analysis, not directly for pavement thickness.
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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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