The guidance brochure that is available on the VCDD website:
http://www.districtgov.org/community...t-02-08-12.pdf
The brochure could more clearly emphasize that:
once entering a roundabout in the right lane, a right-lane car MUST EXIT the roundabout within TWO OR LESS exits.
once entering a roundabout in the left lane, and because a left-lane vehicle may pass by two or more exits before exiting a roundabout, vehicles should avoid traveling side by side through a roundabout
because a left-lane vehicle may exit a roundabout from the left, all drivers should use turn signal even in the roundabout AND right-lane vehicles should always be prepared to yield to a left-lane vehicle.