Question: A 5 % grade intersects a - 3 . 4 % grade at station 1 + 9 9 0 of elevation 4 2 . 3

A 5% grade intersects a -3.4% grade at station 1+990 of elevation 42.30m. Assuming the following properties:Design Speed =60kphHeight of driver's eye =1.37mHeight of object =100mmPerception-Reaction Time =3/4 s Coefficient of friction =0.15Determine the length of curve

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