A vertical sag curve connects two tangents with grades -3% and +2% with the design speed...

A vertical sag curve connects two tangents with grades -3% and +2% with the design speed of
100 km/h.
(a) Calculate the available sight distance and the length of the vertical curve using the minimum
flatness of curve that will satisfy the headlight criterion during dark conditions. Assume the
height of the headlight above the pavement is 0.6 m and the angle of the light beam upward
from the axis of beam is 1.
(a) Assuming that the length of the vertical curve is 75 m, calculate the available sight distance
and the maximum design speed (check for the requirements of i) minimum flatness of curve
for headlight and comfort criteria and ii) minimum stopping sight distance for one-way road.
Assume 2.5 s for driver’s perception and reaction time.

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Ally Wells answered 8 months ago

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