2.70 - A parabolic vertical curve is to connect a –2.2% gradient to a +1.9% gradient...
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Practice Questions
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What is a vertical curve?
💡 Hint: Think of how hills are formed in a road.
Why do we need vertical curves?
💡 Hint: Consider driver comfort and visibility.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the required length of a vertical curve connecting a -2.2% gradient to a +1.9% gradient?
💡 Hint: Review the gradient transition designs.
True or False: Vertical curves have no effect on driver visibility during elevation changes.
💡 Hint: Consider what happens on steep climbs or descents.
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Challenge Problems
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A parabolic curve is to be designed between a -1% gradient and a +3% gradient on a highway with a design speed of 100 km/h. Calculate the minimum length of the vertical curve required.
💡 Hint: Check how speed and gradients dictate curve length.
Discuss the effects of neglecting vertical curves on highway designs in terms of safety and comfort.
💡 Hint: Use examples of sharp inclines or declines.
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