Q. In transportation planning, what does the term 'level of service' (LOS) indicate?
A.
The cost of road maintenance
B.
The quality of traffic flow
C.
The environmental impact of transportation
D.
The safety record of a highway
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Solution
Level of service (LOS) is a qualitative measure that describes the operational conditions of a roadway, indicating the quality of traffic flow experienced by drivers.
Correct Answer:
B
— The quality of traffic flow
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Q. What is the primary function of traffic signs in highway design?
A.
To enhance aesthetic appeal
B.
To provide information and guidance to drivers
C.
To increase traffic flow
D.
To reduce vehicle emissions
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Solution
Traffic signs are essential for providing information and guidance to drivers, ensuring safe and efficient roadway use.
Correct Answer:
B
— To provide information and guidance to drivers
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Q. What is the primary purpose of horizontal alignment in highway geometric design?
A.
To improve vehicle speed
B.
To enhance driver visibility
C.
To ensure safe vehicle maneuvering
D.
To reduce construction costs
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Solution
Horizontal alignment is crucial for ensuring that vehicles can navigate curves safely without losing control.
Correct Answer:
C
— To ensure safe vehicle maneuvering
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Q. What is the purpose of a sight distance analysis in geometric design?
A.
To determine the cost of construction
B.
To assess the visibility of traffic signs
C.
To ensure drivers can see obstacles in the roadway
D.
To evaluate pavement material performance
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Solution
Sight distance analysis is conducted to ensure that drivers have adequate visibility to react to obstacles and other vehicles on the roadway.
Correct Answer:
C
— To ensure drivers can see obstacles in the roadway
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Q. What is the recommended maximum superelevation rate for highways in flat terrain?
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Solution
A maximum superelevation rate of 6% is typically recommended for highways in flat terrain to ensure vehicle stability during turns.
Correct Answer:
C
— 6%
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Q. What is the significance of the 'design vehicle' in highway geometric design?
A.
It determines the speed limit
B.
It influences lane width and turning radii
C.
It affects traffic signal timing
D.
It is used for pavement material selection
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Solution
The design vehicle is used to influence lane width and turning radii to ensure that the roadway can accommodate the largest expected vehicles.
Correct Answer:
B
— It influences lane width and turning radii
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Q. Which factor is most critical when determining the design speed for a highway?
A.
Traffic volume
B.
Road surface material
C.
Topography and curvature
D.
Weather conditions
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Solution
Topography and curvature significantly influence the design speed, as they affect how safely vehicles can travel through the highway.
Correct Answer:
C
— Topography and curvature
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Q. Which geometric design element is critical for accommodating large vehicles at intersections?
A.
Lane width
B.
Shoulder width
C.
Turning radius
D.
Superelevation
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Solution
Turning radius is a critical geometric design element that must be considered to accommodate the larger turning paths of trucks and buses at intersections.
Correct Answer:
C
— Turning radius
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Q. Which pavement material is known for its high durability and low maintenance?
A.
Asphalt
B.
Concrete
C.
Gravel
D.
Brick
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Solution
Concrete is recognized for its high durability and low maintenance requirements compared to other pavement materials.
Correct Answer:
B
— Concrete
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