Q. In the context of highway design, what does the term 'clear zone' refer to?
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A.
The area free of obstacles adjacent to the roadway
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B.
The distance required for stopping sight distance
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C.
The width of the travel lane
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D.
The area designated for traffic signs
Solution
The clear zone is the area adjacent to the roadway that is free of obstacles to enhance safety for errant vehicles.
Correct Answer:
A
— The area free of obstacles adjacent to the roadway
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Q. What is the primary advantage of using flexible pavement over rigid pavement?
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A.
Lower initial cost
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B.
Higher load-bearing capacity
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C.
Longer lifespan
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D.
Better resistance to cracking
Solution
Flexible pavement typically has a lower initial cost compared to rigid pavement, making it a more economical choice for many applications.
Correct Answer:
A
— Lower initial cost
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Q. What is the primary purpose of sight distance in geometric design?
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A.
To determine the width of the roadway
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B.
To ensure drivers can see obstacles in their path
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C.
To calculate the required pavement thickness
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D.
To establish the speed limit
Solution
Sight distance is crucial for ensuring that drivers can see obstacles and react appropriately, enhancing safety.
Correct Answer:
B
— To ensure drivers can see obstacles in their path
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Q. What is the primary purpose of traffic control devices?
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A.
To increase vehicle speed
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B.
To manage traffic flow and enhance safety
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C.
To reduce the number of vehicles on the road
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D.
To provide information about road conditions
Solution
Traffic control devices are essential for managing traffic flow and enhancing safety by providing guidance and information to drivers.
Correct Answer:
B
— To manage traffic flow and enhance safety
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Q. Which of the following is a key consideration when designing vertical curves?
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A.
The radius of the horizontal curve
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B.
Stopping sight distance
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C.
The width of the shoulder
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D.
The type of pavement material
Solution
Stopping sight distance is a key consideration in vertical curve design to ensure that drivers can see and react to changes in the roadway.
Correct Answer:
B
— Stopping sight distance
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Q. Which pavement material is known for its high durability and resistance to deformation under load?
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A.
Asphalt concrete
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B.
Portland cement concrete
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C.
Granular base
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D.
Bituminous surface treatment
Solution
Portland cement concrete is known for its high durability and ability to withstand heavy loads without significant deformation.
Correct Answer:
B
— Portland cement concrete
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