The short answer is that rear wheels of trailers and larger trucks will bump up slightly on the center circle. It was built to accommodate that.
The Town’s Public Works Department worked closely with the Castle Rock Fire and Rescue Department on the roundabout’s design, which had to work for both a tight space and large trucks. Because rear wheels of trailers and larger trucks will need to bump up onto the center slightly, the center circle was designed as a slight dome. With that design, the center circle can be traversed by larger vehicles, but also be seen by the traveling public.
If you still can’t quite picture it, we understand. We’ll be posting a video when the roundabout it completed. Watch the Town’s official Facebook page at Facebook.com/CRgov.
When driving the roundabout, please remember to yield to traffic already in the circle. As always, please yield to public safety vehicles.