A simple circular curve exists with a radius of 900 ft connects the tangents of a two-lanehighway that has a posted speed limit of 45 mph. The highway curve is not superelevated,e=0. A structure is proposed on land on the inside of the curve. Assume the road is on a levelgrade. Determine the minimum distance allowable between the proposed structure and thecenterline of the curve such that the current maximum safe speed of the curve would notneed to be reduced

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 19P
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A simple circular curve exists with a radius of 900 ft connects the tangents of a two-lane
highway that has a posted speed limit of 45 mph. The highway curve is not superelevated,
e=0. A structure is proposed on land on the inside of the curve. Assume the road is on a level
grade. Determine the minimum distance allowable between the proposed structure and the
centerline of the curve such that the current maximum safe speed of the curve would not
need to be reduced
 
 
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