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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is a valley curve?
💡 Hint: Think about how roads change elevation.
Question 2
Easy
Name one type of gradient that can form a valley curve.
💡 Hint: Consider which ways the road can slope.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is a valley curve?
- A curve with an upward slope
- A curve with a downward slope
- A straight line
💡 Hint: Think about the term 'sag' associated with valley curves.
Question 2
True or False: Valley curves are not necessary for road design.
- True
- False
💡 Hint: Consider the purpose of transitions in road design.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Given a valley curve formed by a descending gradient of n=1 in 25 and an ascending gradient of n=1 in 30, calculate both stopping sight distance and the length of the valley curve. Assume a safe design speed of 80 km/h.
💡 Hint: Apply comfort and safety criteria formulas to find both conditions.
Question 2
Discuss the ramifications of not accounting for headlight sight distance when designing valley curves, and provide examples of potential issues.
💡 Hint: Think about situations where low visibility can cause danger.
Challenge and get performance evaluation