A horizontal curve has its middle ordinate, M, 150.00 m and its external distance, E, 300.00 m. That curve has three lanes in each direction with each lane is having a width of 3.50 m. There is also a median with a width of 8.60 m. You are required to calculate the following: a. The central angle of that curve. b. The available stopping sight distance if a fence is located at distance 8.85 m from the inside edge of the inner lane on that curve.

A horizontal curve has its middle ordinate, M, 150.00 m and its external distance, E, 300.00 m. That curve has three lanes in each direction with each lane is having a width of 3.50 m. There is also a median with a width of 8.60 m. You are required to calculate the following: a. The central angle of that curve. b. The available stopping sight distance if a fence is located at distance 8.85 m from the inside edge of the inner lane on that curve.

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 13P

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Concept explainers

Curve setting

A curve is a turn that is provided horizontally or vertically in the design of highways, railways, and runways. A curve connects two straight lines that are separated by the deflection angle. It helps to change the direction and alignment of the highways, railway tracks, and runways. Therefore, the gradual change in their alignment is made by using a curve to provide comfort to the passengers and this also provides an easy turn to change the direction of the moving vehicle.

Question

Note: I need both right solutions with clear calculation

A horizontal curve has its middle ordinate, M, 150.00 m and its external distance, E, 300.00 m. That
curve has three lanes in each direction with each lane is having a width of 3.50 m. There is also a
median with a width of 8.60 m. You are required to calculate the following:
a. The central angle of that curve.
b. The available stopping sight distance if a fence is located at distance 8.85 m from the inside
edge of the inner lane on that curve.

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