2.3.3 - Circulatory Roads
Step Description:
1. On the Create Roundabout - Circulatory Roads dialog box, set the desired options for the following settings:
- Roundabout parameters
- Markings parameters
- Drawing Standards
- Predefined parameters to import
- Site
- Styles
- Layer
- Labels

2. Click the Next > button to proceed to the next roundabout dialog box.
AutoCAD Civil 3D 2012 User's Guide reference:
User's Guide - Dialog Box Reference - Intersections and Roundabouts Dialog Boxes - Create Roundabout - Circulatory Road Dialog Box
For more information watch the video below:
Create Roundabout (WMV)