You're right, especially because a vehicle has to engage with a number of drivers simultaneously. I can tell where a driver is looking, and I can see that he's

You're right, especially because a vehicle has to engage with a number of drivers simultaneously. I can tell where a driver is looking, and I can see that he's looking at me. While a vehicle could have some sort of indicator that say "I see you", it's somewhat harder to imagine how this would work when there are many other cars around (including a mix of AVs and human-driven vehicles). I would guess that at some point cars will communicate directly with each other, and a light might appear on the dash to indicate that a vehicle is aware of your presence/intention. That way human drivers would know that it's safe to maneuver around the AVs whose paths he might cross. But it will probably be a decade before this sort of stuff is worked out, at the earliest.