Road Widening at Curves through AutoCAD Civil 3D

I came across, through my good friend, a subassembly namely, LaneOutsideSuperWithWidening, in AutoCAD Civil 3D which incorporates road widening on curves. I can resist sharing with others.

LaneOutsideSuperWithWidening subassembly inserts a travel lane, applies the Outside Lane superelevation slope value, and widens the pavement at superelevated regions. This subassembly is an extension of LaneOutsideSuper subassembly wherein this subassembly also widens the pavement width in superelevated regions of the corridor.

Length of widening, WL, is computed using Wheelbase length and number of travel lanes. Road widening on entry tangent starts from 0 where the ‘normal crown ends’ and attains WL where the ‘full superelevation’ is achieved. WL remains constant for fully superelevated region. WL diminishes to 0 from ‘end of full super’ to ‘begin of normal crown’ on exit tangent.

I am attaching a result snap shot wherein
wheelbase length = 10m
number of left lanes = 1 ; [computed WL = .22m]
number of right lanes = 2 ; [computed WL = .43m]

Enjoy...