Autodesk CIVIL3D - CIVILDESIGNCOMP 2007 SLM CD Tutorials Manual page 256

7 Under Transition Parameters, for Transition Length, enter 50.
The transition updates to reflect your changes.
Grip edit the widening region
1 On the centerline alignment, select the
Station 4+50. The grip turns red.
2 Click to place the grip at Station 5+00.
Notice that when you changed the starting location of the widening, the
transition moved with it, while its parameters were maintained.
244 | Chapter 8 Alignments Tutorials
widening start grip near