At the moment it is not possible to create cross-sections of the approach of a roundabout, because there are no arrows representing a roundabout in streetmix.

It would be nice you have roundabout arrows added to the streetmix, in addition to the arrows for regular intersections.

For example, for right hand traffic, they could look like the black part of these icons:

• https://www.iconfinder.com/icons/1488584/exit_direction_navigation_roundabout_arrow_icon
• https://www.iconfinder.com/icons/1488565/exit_direction_navigation_roundabout_arrow_icon
• https://www.iconfinder.com/icons/1488578/exit_direction_navigation_roundabout_arrow_icon
• https://www.iconfinder.com/icons/1488588/exit_direction_navigation_roundabout_arrow_icon