My reading was that the Waymo was turning left. Remember, the description is from Waymo's PR, so that's why it's vague on purpose and needs to be taken with a grain of salt. According to another comment bikes can treat stop signs as yield signs in California. If the bike illegally ran a stop sign I would think Waymo would say or imply that.
I agree that there's still lots of ambiguity and Waymo's PR comment provides limited and one-sided detail. I stand by my previous comment as the most likely course of events, but we won't know for sure until video is released.
The comment that claims bikes can treat stop signs as yield signs in California is incorrect. From the CA DMV website [0]:
> Bicyclists must obey STOP signs and red signal lights, and follow basic right-of-way rules.
There was an attempt to change this a few years ago, but it didn't pass.
There was a bill to make something like this legal, but it was vetoed by the governor.
Even if it had passed, it wouldn't have changed anything about this situation. Because there was other traffic in the intersection, the bicyclist would have had to yield and stop before entering the intersection.
