Q. What is the minimum horizontal curve radius for a design speed of 60 km/h according to AASHTO guidelines?
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A.
100 m
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B.
150 m
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C.
200 m
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D.
250 m
Solution
AASHTO guidelines recommend a minimum horizontal curve radius of 100 m for a design speed of 60 km/h.
Correct Answer:
B
— 150 m
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Q. What is the primary goal of transportation planning?
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A.
To maximize vehicle speed
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B.
To minimize construction costs
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C.
To ensure efficient and safe movement of people and goods
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D.
To reduce the number of vehicles on the road
Solution
The primary goal of transportation planning is to ensure the efficient and safe movement of people and goods within a region.
Correct Answer:
C
— To ensure efficient and safe movement of people and goods
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Q. What is the purpose of a roundabout in traffic engineering?
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A.
To increase traffic speed
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B.
To reduce the number of lanes
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C.
To improve traffic flow and safety
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D.
To eliminate traffic signals
Solution
Roundabouts are designed to improve traffic flow and safety by reducing conflict points and promoting continuous movement.
Correct Answer:
C
— To improve traffic flow and safety
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Q. Which geometric design element is critical for ensuring visibility at intersections?
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A.
Sight distance
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B.
Lane width
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C.
Shoulder width
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D.
Superelevation
Solution
Sight distance is crucial for visibility at intersections, allowing drivers to see and react to other vehicles.
Correct Answer:
A
— Sight distance
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Q. Which of the following materials is commonly used for the base layer in flexible pavement?
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A.
Asphalt
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B.
Concrete
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C.
Granular material
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D.
Geotextile
Solution
Granular material is typically used for the base layer in flexible pavement to provide support and drainage.
Correct Answer:
C
— Granular material
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Q. Which type of pavement is known for its flexibility and ability to withstand temperature changes?
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A.
Rigid pavement
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B.
Flexible pavement
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C.
Composite pavement
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D.
Permeable pavement
Solution
Flexible pavement is designed to accommodate temperature changes and traffic loads due to its flexible nature.
Correct Answer:
B
— Flexible pavement
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