These are the type of odd little situations that come up all the time in real world driving. I can't understand how anyone would expect level 4+ autonomous driving to work on a widespread basis without some tremendous breakthroughs in AGI.
How much large scale network engineering have you done?
Exponential backoff (which the previous poster mentioned) is randomized and success is by definition non-deterministic algorithm to resolve conflicting usage. It works very well, and is very simple. But deterministic and non-conflicting are really not qualities that the IP protocol is known for.
10 Drive forwards a bit
30 Did we hit something?
35 YES: Sleep for a short time
40 GOTO 10
Two use cases happen repeatedly: first, it's indecisive on lane changes when there are vehicle(s) in its targeted lane for a long time. If it cannot merge over safely due to traffic or rudeness, it will Stop in its lane until a clearance occurs -- the concept of proceeding to the next left and making a U-turn seems incomprehensible. Second, in certain right turn situations on a red light, it will hever turn if there is traffic in far lanes even if the nearest lane has a generous opening. I see this all the time on the right turn from eastbound Central turning onto southbound Castro St., for example.
To be fair, even I do that sometimes if I just don't trust oncoming traffic not to do something like changing lanes in the intersection or at the last second. To your point, though, it's all dependent upon the intersection, number of lanes, etc., and I'm not familiar with the intersection in question.
'Odd' events like that are probably only 5 seconds out of every hour of driving, so in aggregate one operator could handle 720 cars. At that point, the operator is far cheaper than further work on the AI.
(If four cars arrive at the same time ... you just wing it, I guess.)
- Someone will tailgate me like they want to pass ... but I'm safely in the right lane, and they can easily pass in one of the other two lanes.
- They want to drive a lot faster than me in a residential area, so I pull to the side and wave them to pass, but they just stop there.
Remote operation is a total non-starter. Our existing cellular networks lack the bandwidth and redundancy for safety critical applications. What happens if the local tower is down because the cooling system failed or a construction crew accidentally cut the backhaul fiber?