Practice Attainment Of Super-elevation (15.2.3) - Horizontal Alignment II

Practice: Attainment of super-elevation

Lesson 15.2.3Horizontal Alignment II

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8 questions

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6 sample questions

Question 1.
What is super-elevation and why is it important?
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Think about how this helps vehicles navigate curves.
Question 2.
Name the two methods to attain super-elevation.
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One involves shifting and the other involves rotation.
3Question 3.
What is the primary goal of super-elevation?
- To enhance drainage
- To improve vehicle stability on curves
- To reduce costs
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Think about the forces at play when taking a turn.
4Question 4.
True or False: The diagonal crown method is used to narrow the inner cross-section.
- True
- False
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Recall what shifting the crown achieves.
Question 5.
A highway curve measures a radius of 200 m. Calculate the super-elevation needed for a vehicle traveling at 90 km/h considering lateral friction.
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Use the formula e = (0.75v)^2 / (gR) to simplify.
Question 6.
You have a curved road where a truck with a high center of gravity must navigate. Discuss whether the rotation about the center line or inner edge would provide better stability. Justify your response with principles of super-elevation.
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Evaluate how each method affects vehicle dynamics.

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