A 6° curve (measured at the centerline of the inside lane) is being designed for a highway witha design speed of 65 MPH. The curve is on a 2 percent upgrade. Driver reaction time anddeceleration rate may be taken as 2.5 sec and 11.2 ft/s², respectively. What is the closest anyroadside object may be placed to the centerline of the inside lane of the roadway whilemaintaining adequate stopping sight distance?

Answered: Image /qna-images/answer/2149b057-c35a-4cc5-b2f1-331265fad530.jpg

Answered: A 6° curve (measured at the centerline…

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter7: Intersection Design

Section: Chapter Questions

Problem 15P

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A 5˚ curve (measured at the centerline of the inside lane) is being designed for a highway with a design speed of 65 mi/h. The curve is on a 2% upgrade, and driver reaction time may be taken as 2.5 seconds. What is the closest any roadside object may be placed to the centerline of the inside lane of the roadway while maintaining adequate stopping sight distance?
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