Transportation Engineering |Chapter-2: I| MCQ Practice | Basic Element |Section-1

>> chapter-2: Geometric Design of Highway

ii) Basic Element
• Practice Set-1
• Practice Set-2
• Practice Set-3

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Practice Set-1: Basic Element

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1. What is the main purpose of camber in road design?

a) Improve road aesthetics b) Enhance vehicle acceleration c) Facilitate surface drainage d) Increase road width

Correct Answer: c) Facilitate surface drainage

Camber is provided to drain off rainwater from the road surface, preventing water accumulation that could damage the pavement or create hazardous driving conditions.

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2. Which shape of camber provides flat center and steeper edges?

a) Straight b) Parabolic c) Composite d) Circular

Correct Answer: b) Parabolic

Parabolic camber has a flat center portion with gradually increasing slope towards the edges, providing better drainage and more comfortable riding quality.

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3. The camber for high rainfall areas with concrete pavement should be closest to:

a) 1 in 50 b) 1 in 40 c) 1 in 60 d) 1 in 33

Correct Answer: d) 1 in 33

Higher camber (steeper slope) is recommended for concrete roads in high rainfall areas (1 in 33 or 3%) to ensure quick drainage of rainwater.

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4. A road section with greater super elevation is required in:

a) Flat roads b) Curved sections c) Bridges d) Parking areas

Correct Answer: b) Curved sections

Super elevation (banking) is provided on curves to counteract centrifugal force and improve vehicle stability when negotiating turns.

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5. The standard width of a single-lane road as per IRC is:

a) 3.5 m b) 3.75 m c) 4.25 m d) 5.0 m

Correct Answer: b) 3.75 m

As per Indian Road Congress (IRC) standards, the minimum width for a single-lane road is 3.75 meters.

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6. The term "Right of Way" refers to:

a) Only carriageway b) Entire acquired land for road c) Shoulders only d) Footpath and median

Correct Answer: b) Entire acquired land for road

Right of Way includes the total land area acquired for the road, encompassing the carriageway, shoulders, drainage, utilities, and any future expansion.

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7. Which of the following is not affected by excessive camber?

a) Tyre wear b) Vehicle stability c) Drainage d) Lane width

Correct Answer: d) Lane width

Excessive camber affects vehicle handling, tire wear, and drainage efficiency, but doesn't change the actual lane width measurement.

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8. As per IRC, the average lateral friction factor for highway design is:

a) 0.10 b) 0.15 c) 0.35 d) 0.45

Correct Answer: b) 0.15

IRC recommends a lateral friction coefficient of 0.15 for design purposes, which represents the frictional resistance between tires and pavement.

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9. Which camber is most commonly used for concrete roads?

a) Parabolic b) Straight c) Composite d) Sloped circular

Correct Answer: b) Straight

Straight line camber (also called linear camber) is typically used for concrete roads due to easier construction with straight-edged forms.

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10. A highly cambered road may cause:

a) Better traction b) Difficulty in overtaking c) Better aesthetics d) Reduction in noise

Correct Answer: b) Difficulty in overtaking

Excessive camber can make vehicles lean excessively, creating stability issues during overtaking maneuvers, especially for taller vehicles.

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