Instead imagine a system that is "good enough" that at it's most risk averse configuration it will drive itself in normal conditions, but occasionally it will seem to slow down for now good reason, or even stop, while it waits for a human to intervene because its not sure if its correctly reading the environment ahead.
It would need to be good enough to be able to work well enough of the time to be able to reliably come to a safe stop, but it would mean you'd be able to have one person monitor many vehicles.
The exception is when I know I will trigger an age check.
But to the car comparison: If that happens enough that people won't use them, then they're not good enough unless it drives the cost down enough that people decides it's worth the wait.
But, I think the bigger problem is coverage and reliability. Relying on mobile networks for this type of life-or-death functionality strikes me as extremely dangerous, and that would remain true even if we increased reliability by a factor of three.
A 200ms round-trip would still be comparable to some drivers on the highways right now, but it's certainly suboptimal.
- awkward roads with cones, tricky parking etc
- high speed collision avoidance where the car transfers legal liability to an offshore contractor immediately before impact
Imagine a HFT bidding market like adwords. Guilt as a service. Wonderfully dystopian. Paging Mr. Doctorow....
But, I there are scenarios where remote operation is safe. Maneuvering in a tight alley. Any scenarios that don't require speed and where a failure scenario is bricking an already stationary vehicle. It could also be identifying obstacles (car thinks steam venting from the sewer is a solid object) or approving rule-breaking (allowed to place a wheel on the sidewalk.
A car going at 60mph (~100kmh) travels at 26m/second. 4G has a ping of ~70ms* on top of the time from the cell tower to the operator's computer.
However, I found quite a variance in pings when browsing on the phone, anywhere from 200-300ms at times (maybe due to changing the tower).
So round trip might be at 600ms. Then we account for variance in bandwidth, human reaction time etc. All in all we might be looking at a delay of at least 1s. Guesstimating, of course. That's still 26m of a 2 ton vehicle going at 100kmh without oversight.
* According to https://www.4g.co.uk/news/4g-injecting-new-lease-life-online...