Comment by JumpCrisscross
3 days ago
> Seems like a power outage is a an obvious use case Waymo should have foreseen
We have zero evidence a power outage wasn't foreseen. This looks like a more complex multi-system failure.
3 days ago
> Seems like a power outage is a an obvious use case Waymo should have foreseen
We have zero evidence a power outage wasn't foreseen. This looks like a more complex multi-system failure.
Does it matter?
Once you’re on public roads, you need to ALWAYS fail-safe. And that means not blocking the road/intersections when something unexpected happens.
If you can physically get out of the way, you need to. Period.
> Does it matter
Yes. OP is inferring Waymo's internal processes from this meltdown. ("Makes me think there are likely other obvious use cases they haven’t thought about proactively either.")
If Waymo literally didn't foresee a blackout, that's a systemic problem. If, on the other hand, there was some weird power and cellular meltdown that coïncided with something else, that's a fixable edge case.
> > Does it matter
> Yes. OP is inferring Waymo's internal processes from this meltdown. ("Makes me think there are likely other obvious use cases they haven’t thought about proactively either.")
No, I'm not inferring internal processes.
I'm guessing level of critical thinking.
When you are creating autonomous vehicles, one of the things that you want to risk assess and have mitigation for is what you want the vehicles to do in case the systems they depend on fail (e.g. electricity, comms).
Now, it could be that the team has anticipated those things but some other failure in their systems have caused vehicles to stop in the middle of intersections, blocking traffic (as per article).
I'm super curious to learn more about what Waymo encountered and how they plan to up their game.
3 replies →
The "coinciding problems" should be an assumption, not a edge case we reason away. Because black swan events are always going to have cascading issues - a big earthquake means lights out AND cell towers overloaded or out, not to mention debris in streets, etc.
What they need is a "shit is fucked fallback" that cedes control. Maybe there is a special bluetooth command any police or ambulance can send if nearby, like clear the intersection/road.
Or maybe the doors just unlock and any human can physically enter and drive the car up to X distance. To techies and lawyers it may sound impossible, but for normal humans, that certainly sounds better. Like that Mitch Hedberg joke, when an escalator is out of order it becomes stairs. When a Waymo breaks it should become a car.
3 replies →
>If Waymo literally didn't foresee a blackout, that's a systemic problem.
I agree with this bit
> If, on the other hand, there was some weird power and cellular meltdown that coïncided with something else, that's a fixable edge case.
This is what I have a problem with. That’s not an edge case. There will always be a weird thing no one programmed for.
Remember a few years ago when a semi truck overturned somewhere and poured slimy eels all over the highway? No one‘s ever gonna program for that.
It doesn’t matter. There has to be an absolute minimum fail safe that can always work if the car is capable of moving safely. The fact that a human driver couldn’t be reached to press a button to say to execute that is not acceptable. Not having the human available is a totally foreseeable problem. It’s Google. They know networks fail.
2 replies →
A fail-safe is EXACTLY blocking roads at intersections without power, not proceeding through intersections without power. It's much safer to be stopped than to keep going. I honestly wish the humans driving through blacked out intersections without slowing down in my neighborhood last night actually understood this.
It’s not a fail-safe. It’s a different failure mode. Jamming up traffic, including emergency traffic, creates systemic problems.
It’s a bit like designing an electronic lock that can’t be opened if the power goes out. If your recourse to exiting a dangerous situation becomes breaking the door, then the lock is unsafe.
10 replies →
An intersection without power is just a 4-way stop.
5 replies →
> Once you’re on public roads, you need to ALWAYS fail-safe.
Yes.
> And that means not blocking the road/intersections when something unexpected happens.
No. Fail-operational is not the only allowable fail-safe condition for automobiles. For example, it is acceptable for loss of propulsion to cause stop-in-lane — the alternative would be to require high-availability propulsion systems, or to require drivers to always have enough kinetic energy to coast to side. This just isn’t the case.
One can argue that when operating a fleet with correlated failure modes the rules should change a bit, but that’s a separate topic.