A 3.5° curve is to be designed on a highway with a design speed of 60 mi/h. Spiral transition curves are to be used. Determine the length of the spiral and the appropriate stations for the T.S.,S.C., C.S., and S.T. The angle of deflection for the original tangents is 40°, and the P.I. is at station 15,100 + 26. The segment consists of two 12-ft lanes.
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