Question: A horizontal curve with R--268m is part of a 2-lane highway, and the minimum distance that a large billboard can be placed from the

A horizontal curve with R--268m is part of a 2-lane highway, and

A horizontal curve with R--268m is part of a 2-lane highway, and the minimum distance that a large billboard can be placed from the centerline of the inside lane of the curve is 18m. Find the maximum speed (in Km/hr) on the curve without reducing required SSD? Assume t=2.5 Sec. and a=3.5.

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