Autonomous-driving firm Waymo's cars have been going up and down the cul-de-sac at all hours "for weeks", according to local news station KPIX.
Residents say vehicles sometimes have to queue before making multi-point turns to leave the way they came.
Waymo says the vehicles are just "obeying road rules" designed to limit traffic in certain residential streets.
"There are some days where it can be up to 50," Jennifer King told KPIX. "It's literally every five minutes. And we're all working from home, so this is what we hear."
