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2 cards from this section. Quick, good the night before a test.
What are the elements of a simple circular curve?
Think about the main parts that define a circle.
Define super-elevation.
It helps counteract centrifugal force.
What is a transition curve?
Remember its purpose in road safety.
True or False: A parabolic curve is typically used for vertical applications in highways.
Consider the advantages it provides over others.
A roadway is designed to transition from a straight path into a circular curve of radius 800m. Calculate the necessary length of the transition curve if the desired rate of change of radial acceleration is 0.5 m/s².
Don’t forget to convert units where necessary.
A compound curve connects two straights with a total deflection angle of 70°. Determine the different radii required if the inner radius is 300m.
Look back at the relationships between radii in compound curves.
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