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

>> chapter-2: Geometric Design of Highway

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

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Practice Set-2: Basic Element

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1. Which factor does not influence camber design?

a) Type of pavement b) Rainfall intensity c) Width of shoulders d) Surface roughness

Correct Answer: c) Width of shoulders

While shoulder width is important for safety, it doesn't directly influence the camber design which is primarily determined by pavement type, rainfall, and surface characteristics.

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2. Camber on bituminous roads is usually provided in:

a) Circular shape b) Straight slope c) Parabolic or composite shape d) No camber

Correct Answer: c) Parabolic or composite shape

Bituminous roads typically use parabolic or composite camber shapes as they provide better drainage and riding comfort compared to straight or circular cambers.

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3. Which road element determines the position of the road on the ground?

a) Superelevation b) Alignment c) Cross-section d) Shoulders

Correct Answer: b) Alignment

Alignment refers to the position and direction of the road centerline on the ground, determining the horizontal and vertical positioning of the road.

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4. The slope provided across the road width is called:

a) Longitudinal slope b) Cross fall c) Superelevation d) Vertical curve

Correct Answer: b) Cross fall

Cross fall is the general term for the transverse slope across the road width, which includes both normal camber and superelevation on curves.

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5. The terrain type with steepest slope is:

a) Rolling b) Plain c) Mountainous d) Hilly

Correct Answer: c) Mountainous

Mountainous terrain has the steepest slopes (greater than 60%), followed by hilly (25-60%), rolling (10-25%), and plain (0-10%) terrains.

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6. Which surface will have the least friction?

a) Rough concrete b) Dry asphalt c) Wet polished tile d) Grooved cement

Correct Answer: c) Wet polished tile

Wet polished tile offers the least friction due to its smooth surface and water lubrication, making it most slippery among the options.

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7. Superelevation is provided in road geometry to:

a) Support roadside drains b) Counteract centrifugal force c) Reduce width d) Increase cost

Correct Answer: b) Counteract centrifugal force

Superelevation (banking) helps balance the centrifugal force on vehicles negotiating curves, improving safety and comfort.

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8. What is the typical camber value for bituminous roads in heavy rain zones?

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

Correct Answer: c) 1 in 33

In heavy rainfall areas, steeper camber (1 in 33 or ~3%) is recommended for bituminous roads to ensure quick drainage of rainwater.

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9. Which of the following is incorrect about camber?

a) Promotes drainage b) Reduces water infiltration c) Always flat in highways d) Helps prevent rutting

Correct Answer: c) Always flat in highways

Highways typically have camber (not flat) for drainage purposes. The statement that highways are always flat is incorrect.

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10. If camber is too high, it may cause:

a) Faster travel b) Water accumulation c) Uneven tyre wear d) Smoother curves

Correct Answer: c) Uneven tyre wear

Excessive camber causes vehicles to lean more to one side, resulting in uneven tire wear on the inner or outer edges of the tires.

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