Civil 3D add & edit alignment labels

Station labels display reference information about specific points along the length of an alignment. AutoCAD Civil 3D supports the following alignment station label types:
Major Stations
Minor Stations
Geometry Points
Profile Geometry Points
Station Equations
Design Speeds
Superelevation Critical Points
Cant Critical Points
When you create an alignment, you select a label set, which is a predefined collection of label types with associated styles. You can modify the station labels in an existing alignment, and then optionally save the changes as a label set.
After an alignment has been created, you can change the type and style of the station labels. You can save a collection of alignment station label types and styles as a label set, which can be applied to other alignments.
jeewc3d.blogspot.com