Question: Q 6 . A vertical curve joining a - 8 % grade to the horizontal grade is formed when a rural highway passes under a

Q6. A vertical curve joining a -8% grade to the horizontal grade is formed when a rural
highway passes under a bridge. The vertical point of intersection of these two grades lies
0.9m below the curve. If the vertical clearance of the underpass is only 3.0m, what
speed limit would you suggest should be imposed at this spot, considering a safe stopping
sight distance?
Q 6 . A vertical curve joining a - 8 % grade to

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