2.71 - A road having an up-gradient of 1 in 15 is to be connected to a down-gradient of 1 in 20...
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Practice Questions
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What is the significance of a vertical parabolic curve in road design?
💡 Hint: Think about the driver's experience on a road.
How is gradient expressed in road design?
💡 Hint: Consider how steepness is denoted mathematically.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the primary purpose of a vertical parabolic curve in road design?
💡 Hint: Think about why visibility is crucial for roadways.
Visibility distance can be affected by which of the following?
💡 Hint: Look at how eyesight and roadway design interact.
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Challenge Problems
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Given a new gradient of 1 in 10, design a parabolic curve considering driver visibility. Calculate all necessary dimensions to maintain a 200 m visibility.
💡 Hint: Consider how steeper gradients require adjustments in curve length for safety.
Analyze the current visibility distance for a parabolic curve with specified eye height and adjust it for safety improvements.
💡 Hint: Refer back to visibility calculations made in previous examples.
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