On a level road, the stopping sight distance of a vehicle is the sum of which two distances?
Correct answer: A. Perception-reaction distance and braking distance
- A. Perception-reaction distance and braking distance
- B. Overtaking distance and passing distance
- C. Acceleration distance and merging distance
- D. Turning distance and clearance distance
Explanation
Stopping sight distance includes the distance travelled during the driver's perception and reaction time plus the braking distance after the brakes are applied. Overtaking distance is used for passing sight distance, not for stopping.
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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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