We have a heavily trafficked roundabout in our neighborhood and it's a big hazard to pedestrians because drivers take it way too fast and fail to yield to pedes

We have a heavily trafficked roundabout in our neighborhood and it's a big hazard to pedestrians because drivers take it way too fast and fail to yield to pedestrians in the crosswalks around it. Aside from that, the roundabout is great but takes up a lot more space than an intersection would. Maybe some bumps to calm the traffic approaching the roundabout would help. The problem that I see is just insufficient respect for traffic laws. I'm not sure what to do about it, aside from more police presence.