Roundabouts reduce certain types of vehicle collisions, but they introduce specific risks for pedestrians that don't exist at traditional intersections. The continuous circular flow means vehicles rarely come to a complete stop, making it harder for pedestrians to find safe crossing opportunities. Drivers entering roundabouts focus primarily on yielding to circulating traffic on their left, often failing to notice pedestrians approaching from the right.
California roundabouts typically feature crosswalks set back from the circular roadway at each approach. This design requires pedestrians to cross in two stages, first crossing the entering lane, then waiting on a splitter island before crossing the exiting lane. Many drivers don't understand they must yield to pedestrians at both crossing points. The confusion is compounded when multiple lanes enter or exit the roundabout, creating complex yielding scenarios.
Visibility is another major concern. Landscaping in the central island, while aesthetically pleasing, can obstruct sightlines between drivers and pedestrians. At night or in poor weather, these visibility issues become even more pronounced. Studies show that pedestrian accidents at roundabouts often involve drivers who simply didn't see the person crossing until it was too late.