A roundabout drawing standards file controls the default parameters and values that are applied when a roundabout is created.
For imperial drawings, the default roundabout drawing standards .xml file is located in:
C:\ProgramData\Autodesk\C3D <version>\enu\Data\Corridor Design Standards\Imperial
For metric drawings, the file is located in:
C:\ProgramData\Autodesk\C3D <version>\enu\Data\Corridor Design Standards\Metric
This .xml file contains values for roundabout parameters that are customized for specific geographical or organizational requirements. For example, the roundabout design standard .xml file can contain one or more design standards, or roundabout types, such as US standard, Florida standard, UK, France, and so on.
If desired, you can create your roundabout design standard .xml files to suit your own specific regional or project needs.
A roundabout design standard .xml file also contains presets, which are sets of predefined values for certain roundabout parameters.
Exercise 5: Working with Roundabout Design Standards and Presets