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Transition curve is provided in horizontal alignment
- a)to increase the radius of curvature
- b)to facilitate the application of superelevation
- c)to counteract the centrifugal force developed
- d)to prevent vehicles from skidding laterally
Correct answer is option 'B'. Can you explain this answer?
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Transition curve is provided in horizontal alignmenta)to increase the ...
Transition curves are provided in horizontal alignment to facilitate the application of superelevation. Superelevation is the raising of the outer edge of the pavement on a curved section of a road or railway to counteract the centrifugal force developed by vehicles as they travel through the curve. This allows the vehicle to safely negotiate the curve at higher speeds. Transition curves are used to smoothly connect the tangents or straight sections of the road to the circular curves of the road. Transition curves allow the radius of curvature of the road to gradually increase or decrease, which helps the driver to adjust to the change in the radius of the road, and prevent skidding and wheel load transfer due to centrifugal force.
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Transition curve is provided in horizontal alignmenta)to increase the ...
Explanation:
Transition curves are provided in horizontal alignment to facilitate the application of superelevation. Superelevation is the process of raising the outer edge of a curved road or track above the inner edge to allow vehicles to travel at higher speeds without skidding or overturning.
Reasons for providing transition curves:
To increase the radius of curvature:
- Transition curves are used to transition from a straight section of road to a curved section with a larger radius of curvature, making it easier for vehicles to negotiate the curve.
To counteract the centrifugal force developed:
- When a vehicle travels on a curved road, a centrifugal force is developed that tends to push the vehicle towards the outside of the curve.
- By providing a transition curve, the rate of change of curvature is increased gradually, allowing the centrifugal force to be counteracted by the application of superelevation.
To prevent vehicles from skidding laterally:
- Lateral skidding is a major cause of accidents on curved roads, particularly when the road is wet or slippery.
- The use of transition curves helps to reduce the likelihood of lateral skidding by providing a smooth transition from the straight section of road to the curved section with superelevation.
Conclusion:
Thus, the correct option is B - to facilitate the application of superelevation.
Transition curves are provided in horizontal alignment to facilitate the application of superelevation. Superelevation is the process of raising the outer edge of a curved road or track above the inner edge to allow vehicles to travel at higher speeds without skidding or overturning.
Reasons for providing transition curves:
To increase the radius of curvature:
- Transition curves are used to transition from a straight section of road to a curved section with a larger radius of curvature, making it easier for vehicles to negotiate the curve.
To counteract the centrifugal force developed:
- When a vehicle travels on a curved road, a centrifugal force is developed that tends to push the vehicle towards the outside of the curve.
- By providing a transition curve, the rate of change of curvature is increased gradually, allowing the centrifugal force to be counteracted by the application of superelevation.
To prevent vehicles from skidding laterally:
- Lateral skidding is a major cause of accidents on curved roads, particularly when the road is wet or slippery.
- The use of transition curves helps to reduce the likelihood of lateral skidding by providing a smooth transition from the straight section of road to the curved section with superelevation.
Conclusion:
Thus, the correct option is B - to facilitate the application of superelevation.
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Transition curve is provided in horizontal alignmenta)to increase the radius of curvatureb)to facilitate the application of superelevationc)to counteract the centrifugal force developedd)to prevent vehicles from skidding laterallyCorrect answer is option 'B'. Can you explain this answer?
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