What does operate in mean? Eg if it's open to employees does that count?

@wrhall https://support.google.com/waymo/answer/9059119?hl=en I think this will be the official answer.

Service areas - Waymo One Help

Ride with Waymo One anytime you’d like. We’re on the road 24 hours a day and 7 days a week. We operate in parts of San Francisco, Phoenix, Los Angeles and Austin

Is it clear that they’re even scanning the Berkeley streets yet? I live in Berkeley and have never seen one.

they've only just started testing on SF highways as of this week (limited to employees at the moment)