Use this dialog box to view and edit the parameters of the corner radius included in the junction object.
Click the expand 
and collapse 
buttons at the top right to expand and collapse the information displayed in this dialog box.
When you select an item on this dialog box, the affected object is highlighted in the drawing, and the conceptual graphic on the dialog box updates to indicate the location affected by the edit.
Junction Quadrant
This drop-down list lets you specify each quadrant in the junction. You can also click Next and Previous to advance through the quadrants.
Incoming\Outoging Lane Details
Specifies corner radius profile details for the incoming and outgoing lanes.
- Incoming or Outgoing Road Centerline Name
-
Displays the name of the centerline alignment for the incoming and outgoing road.
- Side
-
Displays which side of the road this profile reflects.
Corner Radius Profile Parameters
Use these settings to view or change the parameters of the corner radius profiles included in the junction creation.
- Define Corner Radius Profile By
-
Displays the method that was used to define the corner radius profile. For Civil 3D version 2010, the only supported method for defining corner radius profiles is by joining straights.
- Extend Profile Along Incoming Lane
-
Specifies whether to extend the corner radius profile along the incoming lane of the junction.
- Length To Extend Along Incoming Lane
-
When Extend Profile Along Incoming Lane is set to Yes, this option lets you specify the length to extend the corner radius profile along the incoming lane of the junction.
- Extend Profile Along Outgoing Lane
-
Specifies whether to extend the corner radius profile along the outgoing lane of the junction.
- Length To Extend Along Outgoing Lane
-
When Extend Profile Along Incoming Lane is set to Yes, this option lets you specify the length to extend the corner radius profile along the outgoing lane of the junction.