An existing horizontal curve has a radius of 85 metres which restricts the maximum speed on this section to only 60% of the design speed of the highway. Highway officials want to improve the road to elimintare this bottleneck. Assume coefficient of side friction is 0.15 and rate of superelevation is 8%. Compute the existing speed, design speed and new radius of curvatur

Traffic and Highway Engineering
5th Edition
ISBN:9781305156241
Author:Garber, Nicholas J.
Publisher:Garber, Nicholas J.
Chapter15: Geometric Design Of Highway Facilities
Section: Chapter Questions
Problem 25P
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An existing horizontal curve has a radius of 85 metres which restricts the maximum speed on this section to only 60% of the design speed of the highway. Highway officials want to improve the road to elimintare this bottleneck. Assume coefficient of side friction is 0.15 and rate of superelevation is 8%. Compute the existing speed, design speed and new radius of curvature.

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