Every time I thought about Trinity Drive with roundabouts I had a general feeling of unease. And then I remembered.
When I lived in the Boston area and I had commuted to Cambridge, MA, from nine miles away by bicycle, roundabouts were the worst part of the commute.
If you stayed on the right, it was all too easy for cars to peel off of the circle to the right and try to mow you down. If you went into the main lane to avoid being run over, drivers would honk at you.