Practice Vertical Alignment - 2 (18) - Vertical Alignment - 2 - Transportation Engineering

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9 questions

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2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What characterizes a valley curve?
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Think about the shape of a 'U'.
Question 2.
What factor greatly affects visibility on valley curves at night?
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What do drivers depend on when driving at night?
3Question 3.
What type of curve is a valley curve?
- Concave
- Convex
- Linear
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Think about the shape that resembles a valley.
4Question 4.
True or False: Valley curves are only a concern during the daytime.
- True
- False
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Consider how visibility changes at different times of day.
Question 5.
A road with a descending gradient of 1 in 20 meets a flat section. Determine the length of the valley curve needed to ensure comfort at 70 km/h with SSD of 150 m under nighttime conditions.
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Review both comfort rate and adequate sight distance calculations.
Question 6.
Analyze the impact of an improperly designed valley curve that ignores minimum sight distance at night. What accidents might occur, and how can they be prevented?
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Consider referencing visibility distances and headlight capabilities.

5 more questions in this section. Enroll free to practise them all.