Among the new features in Civil 3D 2009 is the ability to target Feature Lines. For those who may still be transitioning from Land Desktop, a Feature Line is, in essence, a 3D Polyline on steroids. Since Feature Lines are a topic of their own, I will not digress any further than to say this post will only touch on the abilities of Feature Lines. Prior to the release of AutoCAD Civil 3D 2009, to create a transition we would have to use a second alignment. While this method worked it truly wasn’t optimal.
Creating your Assembly
For those transitioning from LDT to C3D, Assemblies are what would otherwise be known as Templates in LDT. It should be noted that not all Subassemblies can transition. Consequently, as you construct your Assembly you’ll want to be sure to select an Assembly which can transition. For today’s discussion, I am going to choose the “BasicLaneTransition” from the “Imperial-Basic” Tool Palette.