Either stop (before; preferred) or go (ahead of me) in the roundabout but don't hesitate in the middle of it! - UpRide.cc

Either stop (before; preferred) or go (ahead of me) in the roundabout but don’t hesitate in the middle of it!

I was traveling through the roundabout at Vista Ridge Parkway and Mountain View Boulevard in Erie, Colorado when the driver of a maroon-colored Chevy truck (CO 839-QZZ) failed to yield to me but then probably decided they weren't going to make it and stopped, in the middle of the roundabout, to let me pass. I'm happy they decided to stop and not run me over but they should've yielded at the entrance to the roundabout and let me pass first.