Featured photo from @echadwilliams
This comment from 2015 still rings true, not as many accidents per se, but definitely feels like chaos during rush hour. The one on 25th and M is also scary.
You are spot on with the issues of the large roundabout. The apparent flaw in its design which is most troublesome is the flow of traffic traveling east on Jefferson. Since it appears to the drivers to be a straight path they assume to have the right-of-way and do not yield to other vehicles already in the circle. There are daily close calls and my guess is there will be many accidents as a result, not to mention the increase in noise from horns. It is disappointing that shortcuts were taken with these roundabouts.Dave