There are also pedestrians in the mix - so a cyclist running a red light can still pose a serious hazard to other people. In the Bay Area there have been cases

There are also pedestrians in the mix - so a cyclist running a red light can still pose a serious hazard to other people. In the Bay Area there have been cases of pedestrians killed, as well as serious injuries such as broken legs or arms. I'd also worry about bicycle-vs-bicycle collisions. Maybe density is too low to make this terribly likely, but it doesn't sound like a scenario that would go well either.