Sometimes pedestrians share the sidewalk with bicycles. When that happens, bicyclists are required to yield to pedestrians. From the PI’s Seattle 911 blog:
Every person riding a bike on a sidewalk or public path shall yield the right of way to a pedestrian and must give an audible signal before overtaking and passing any pedestrian, Seattle police spokesman Jeff Kappel said.
Good reminder. I am all for the empowerment and respect of bicycles on the road, but if they are zooming down the sidewalk the bullying is just going down the line from car to bike to person. In SF i think riding on the sidewalk is illegal, anyway. It’s just too dangerous.