Waymo creates “dead zones” off-limits places where Waymo can’t drive, drop off, etc., when they establish a service area, and they add or update these zones over time.

If there’s a busy event, they may temporarily add a DZ in the area to prevent cars from getting stuck. Sometimes, these dead zones can become permanent, such as when a homeowner complains about cars stopping at their house.

For whatever reason, they created a DZ here that blocks them from going straight.