The intersection of Alcatraz Ave and King St in south Berkeley has a 2-way stop for traffic on King St, but no stop for traffic on Alcatraz going east or west. Alcatraz is a car arterial but King St is a highly trafficked bike boulevard and pedestrian corridor.
Even with the existing flashing beacons on the crosswalk pedestrians still find it very difficult to cross Alcatraz here because drivers just don't yield, and with the poor sightlines due to all the curbside parking and the fast vehicle speeds on Alcatraz, cyclists on King St also find it very difficult and dangerous to cross here, even after stopping and yielding to cross traffic.
I think the solution to this problem would be to either turn the 2-way stop into a 4-way stop at this intersection, or install a traffic signal that is timed to coordinate with the one at Alcatraz and Adeline. During the busiest hours Alcatraz traffic backs up all the way past King St, but motorists continue to block the intersection and fail to let cross traffic through. As such, a stop sign or traffic signal here would allow the bike boulevard traffic to make it past Alcatraz usually without even impacting the vehicles on that street at all.