Given: A rural collector is to be constructed in rolling terrain with an ADT of 650 veh/day. Determine: (a) minimum design speed (b) recommended lane width (c) preferable shoulder width (d) maximum grade

What will be an ideal response?


(a) From Table 15.1, for rolling terrain,
minimum design speed = 40 mi/h
(b) Lane width = 12 ft,
(c) Shoulder width = 10 ft
(d) From Table 15.3
maximum desirable grade = 8%

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