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Re:Waymo halts service during S.F. blackout after causing tr... by MBCook on Sunday December 21, 2025 @01:22PM (#46346910)
From John Ripley on Mastodon:

“Thought of the day, and I wish there were a way to get this to legislators:

Come the next Big One earthquake, all of San Francisco’s emergency services will be blocked by Waymos.”

I’m AMAZED they’re not designed to handle this better. This does indeed seem like a massive problem. “Oops we give up” right when things get the worst? How is this OK?

I’ve been very impressed by Waymo’s more cautious approach. Perhaps they haven’t fully thought through the ramifications of it though.

https://mastodon.social/@jripley/115758725115731454

Re:Waymo halts service during S.F. blackout after causing tr... by sefrost on Sunday December 21, 2025 @04:03PM (#46348403)
Surely if the Big One hits then all of the metropolitan areas on the West Coast would be gridlocked in scenes reminiscent of zombie apocalypse movies anyway? I guess we won't know until it happens for sure, but I can't imagine it would be easy for emergency services to get around with or without Waymo.
Re:Waymo halts service during S.F. blackout after causing tr... by MBCook on Sunday December 21, 2025 @04:51PM (#46348896)
It’s not gonna be good. But you want it to be a gridlock because the cars can’t get out fast enough because there’s too many cars on the road.

Not because a bunch of cars that are perfectly capable of moving are just sitting there blocking things purposefully waiting for the driver in the sky to take over.

And what if, due to $BIG_DISASTER they won’t be able to for a week?

Re:Waymo halts service during S.F. blackout after causing tr... by kylehotchkiss on Sunday December 21, 2025 @01:43PM (#46347112)
I would just push them all out of the way with my fire truck, I mean one fire truck could probably clear 6-8 Waymos at a time, right?
Re:Waymo halts service during S.F. blackout after causing tr... by malfist on Sunday December 21, 2025 @02:28PM (#46347515)
Fire trucks are very expensive to be playing bumper cars with
Re:Waymo halts service during S.F. blackout after causing tr... by quesera on Sunday December 21, 2025 @04:03PM (#46348402)
Modern fire trucks, and police cars usually, are built to be able to push vehicles out of the way. It's a very common need.

(Not an argument against Waymo doing better in this situation though!)

Re:Waymo halts service during S.F. blackout after causing tr... by wolrah on Monday December 22, 2025 @07:59AM (#46353797)
> Modern fire trucks, and police cars usually, are built to be able to push vehicles out of the way.

Not so much police cars, anymore.

Back in the time of the B-Body Caprice and the Crown Vic, sure. These days with the exception of the Tahoe the most common police vehicles are all unibody platforms. Charger, Durango, Explorer, Taurus, and the rare Australian Caprice

You can still bolt a push bumper to them and most departments do, but they have to be used with a lot more caution and a lot less aggression to avoid damaging the vehicle than in the days of body-on-frame sedans.

Fire trucks on the other hand, yeah they're basically the opposite in that there might be a couple of Explorers or Durangos in the fleet but most everything else is a medium duty truck or a custom chassis specifically for fire service.

Re:Waymo halts service during S.F. blackout after causing tr... by w-ll on Sunday December 21, 2025 @03:56PM (#46348334)
True, but in a 'Big One' event i dont think we would care.
Re:Waymo halts service during S.F. blackout after causing tr... by moregrist on Sunday December 21, 2025 @04:17PM (#46348561)
You care because it takes valuable time to move things out of the way and in an emergency time is often the one resource you don’t have.
Re:Waymo halts service during S.F. blackout after causing tr... by estebank on Sunday December 21, 2025 @04:41PM (#46348812)
In an emergency, if the only options are taking time moving things out of the way or not being able to move, you move things out of the way.
Re:Waymo halts service during S.F. blackout after causing tr... by MBCook on Sunday December 21, 2025 @04:49PM (#46348877)
GP’s point is that’s a false dichotomy.

Yes that’s the correct decision when those are the only options, like if a car has stalled or the driver just got out and ran away.

In this case there’s a third option: the computer that’s still perfectly functional should have been able to get out of the way on its own. And legally all drivers are required to.

I assume that applies to robots as well, if it doesn’t it absolutely should.

Re:Waymo halts service during S.F. blackout after causing tr... by blibble on Sunday December 21, 2025 @04:42PM (#46348814)
if google's property is blocking the road, google can pay for the damage
Re:Waymo halts service during S.F. blackout after causing tr... by philipallstar on Sunday December 21, 2025 @05:06PM (#46349058)
As long as you're happy that if your property ever blocks the road, you will pay for the damage too.
Re:Waymo halts service during S.F. blackout after causing tr... by solid_fuel on Sunday December 21, 2025 @06:16PM (#46349627)
> As long as you're happy that if your property ever blocks the road, you will pay for the damage too.

Pretty sure that's always the expectation? It's typical to tow illegally parked cars, smash windows to run hoses through cars blocking hydrants, etc.

The only unusual thing here would be holding a corporation to account the way we hold individuals to account.

Re:Waymo halts service during S.F. blackout after causing tr... by philipallstar on Monday December 22, 2025 @03:22AM (#46352224)
A broken down car isn't illegally parked.
Re:Waymo halts service during S.F. blackout after causing tr... by catlikesshrimp on Monday December 22, 2025 @03:52AM (#46352365)
A broken down car is also towed when needed.
Re:Waymo halts service during S.F. blackout after causing tr... by philipallstar on Monday December 22, 2025 @05:57AM (#46353115)
Yes, to get it fixed.
Re:Waymo halts service during S.F. blackout after causing tr... by potato3732842 on Monday December 22, 2025 @12:14PM (#46356100)
The cops will have it towed at usurious expense to the owner if the owner doesn't get it towed faster.
Re:Waymo halts service during S.F. blackout after causing tr... by solid_fuel on Tuesday December 23, 2025 @07:19PM (#46371074)
But none the less, it is the owner who pays to have it towed.
Re:Waymo halts service during S.F. blackout after causing tr... by blibble on Sunday December 21, 2025 @05:44PM (#46349370)
absolutely

don't be a dick, don't block the road

Re:Waymo halts service during S.F. blackout after causing tr... by Rebelgecko on Sunday December 21, 2025 @08:44PM (#46350485)
Duh?
Re:Waymo halts service during S.F. blackout after causing tr... by ziml77 on Sunday December 21, 2025 @11:21PM (#46351288)
No I won't be happy about it, but yes if I block emergency services and they need to damage my property then I am absolutely the one who should have to pay.
Re:Waymo halts service during S.F. blackout after causing tr... by phil21 on Monday December 22, 2025 @01:09AM (#46351791)
This is the current norm. If you are parked in front of a fire hydrant or in a fire lane when the needful happens, the fire department will remove you with prejudice. My few volunteer fire department family members take a certain gleeful joy in expediting your exit from the area when the rare opportunity presents itself.

Chances are the damage will be solely on your vehicle, as fire trucks and police vehicles are equipped to push stuff off the road without damage to their equipment.

Re:Waymo halts service during S.F. blackout after causing tr... by GuinansEyebrows on Monday December 22, 2025 @04:41PM (#46359484)
what a way to defend google's theft of the commons
Re:Waymo halts service during S.F. blackout after causing tr... by autoexec on Sunday December 21, 2025 @09:27PM (#46350710)
Just paying for the physical damage isn't enough. It should also come with massive fines for obstructing emergency vehicles.
Re:Waymo halts service during S.F. blackout after causing tr... by mmooss on Sunday December 21, 2025 @10:53PM (#46351148)
That doesn't bring people back to life or restore quality of life for life-changing injuries.
Re:Waymo halts service during S.F. blackout after causing tr... by kylehotchkiss on Sunday December 21, 2025 @05:28PM (#46349230)
They have massive steel bumpers, pushing them away slowly seems mostly harmless (not at maximum velocity lol)
Re:Waymo halts service during S.F. blackout after causing tr... by uqual on Sunday December 21, 2025 @06:01PM (#46349526)
Although it would be amusing for them to do it at high velocity if the cars (and surrounding cars if any) were "dead heading" or had no humans in them for other reasons (perhaps because the humans had fled the vehicles upon seeing the fire truck headed their way!).
Re:Waymo halts service during S.F. blackout after causing tr... by tjwebbnorfolk on Sunday December 21, 2025 @09:39PM (#46350773)
If we reach the point of needing to forcicbly move mass numbers of cars off the road for fire trucks, that's a dire situation where routine cost/benefit analysis has already gone out the window.
Re:Waymo halts service during S.F. blackout after causing tr... by potato3732842 on Monday December 22, 2025 @12:13PM (#46356089)
You're not gonna do anything more than cosmetic to the chrome bumper on a truck by pushing cars at low speed.
Re:Waymo halts service during S.F. blackout after causing tr... by JumpCrisscross on Sunday December 21, 2025 @01:34PM (#46347012)
> Come the next Big One earthquake, all of San Francisco’s emergency services will be blocked by Waymos

Were any emergency vehicles actually blocked?

We have an actual failure here–step one is identifying actual failures so we can distinguish what really happened from what hypothetically could.

Re:Waymo halts service during S.F. blackout after causing tr... by MBCook on Sunday December 21, 2025 @01:37PM (#46347056)
I don’t know. But if human drivers are having to go around them, they’re not doing the right thing.

They need to drive or pull over. Never just stop there in the road and wait.

Re:Waymo halts service during S.F. blackout after causing tr... by JumpCrisscross on Sunday December 21, 2025 @01:38PM (#46347063)
> if human drivers are having to go around them, they’re not doing the right thing

They're not. But it's also not a disaster. Pretending it is on Twitter is pandering, not policymaking.

> They need to drive or pull over. Never just stop there in the road and wait

Agreed. Waymo has a lesson to learn from. Sacramento, and the NHTSA, similarly, need to draw up emergency minimums for self-driving cars.

There are productive responses to this episode. None of them involve flipping out on X.

Re:Waymo halts service during S.F. blackout after causing tr... by gavmor on Sunday December 21, 2025 @01:53PM (#46347194)
No, it's not a disaster, but with a little imagination it could be a hormetic innoculation.
Re:Waymo halts service during S.F. blackout after causing tr... by MBCook on Sunday December 21, 2025 @02:00PM (#46347250)
> But it's also not a disaster

Because it’s a power outage. If we instead learned about this during a real disaster people could have died because these things were let on the road without planning what they should do in abnormal circumstances.

We’re lucky it’s not a disaster.

Re:Waymo halts service during S.F. blackout after causing tr... by JumpCrisscross on Sunday December 21, 2025 @02:13PM (#46347387)
> If we instead learned about this during a real disaster people could have died

This is universally true. The question is how bad could it have been, and in which cases would it have been the worst?

> We’re lucky it’s not a disaster

This is always true. Again, the question is how lucky?

We have an opportunity to count blocked emergency vehicles and calculate a hypothetical body count. This lets us characterize the damage. But it also permits constraining hysteria.

Re:Waymo halts service during S.F. blackout after causing tr... by SR2Z on Sunday December 21, 2025 @09:37PM (#46350760)
> We’re lucky it’s not a disaster.

I'm sure that if this was something predictable like a cyclone or wildfire, Waymo would still have 100% of their nightly traffic on the road, right? And SFFD would not be able to do what they normally do when they can't get support, which is hop into the car and use the controls to manually move it?

Or... maybe Waymo HAS considered what their cars should do in abnormal circumstances and this kind of outcome was considered acceptable for the number of cars and the nature of the "disaster"?

Re:Waymo halts service during S.F. blackout after causing tr... by ailurooo on Sunday December 21, 2025 @04:18PM (#46348584)
waymos shouldn't exist, and san francisco shouldn't just be a experimentation lab for tech companies
Re:Waymo halts service during S.F. blackout after causing tr... by crooked-v on Sunday December 21, 2025 @04:29PM (#46348695)
> They're not.

They are. I did myself yesterday because one was sitting at the front of a turning lane at a dead light, just waiting there forever with the blinker on.

Re:Waymo halts service during S.F. blackout after causing tr... by jazzyjackson on Sunday December 21, 2025 @04:48PM (#46348871)
> Waymo has a lesson to learn from.

At what point can we be spared from having Waymos lessons inflicted upon us

Re:Waymo halts service during S.F. blackout after causing tr... by JumpCrisscross on Sunday December 21, 2025 @07:50PM (#46350199)
> At what point can we be spared from having Waymos lessons inflicted upon us

Again, we had a real event happen. Not hypothetical. What was the actual cost inflicted?

Re:Waymo halts service during S.F. blackout after causing tr... by merely-unlikely on Sunday December 21, 2025 @08:40PM (#46350461)
When humans can cause fewer accidents and fatalities than Waymo on average. People are still inflicting those lessons on us.
Re:Waymo halts service during S.F. blackout after causing tr... by s1artibartfast on Sunday December 21, 2025 @08:44PM (#46350488)
Whenever they become so much a problem that they counterbalance public and private interests in having and improving robotaxis. For most people, we are nowhere near that.
Re:Waymo halts service during S.F. blackout after causing tr... by autoexec on Sunday December 21, 2025 @09:30PM (#46350726)
When we learn our lesson that letting companies beta test on public roads consequence free is just another cost to the rest of us so that a small number of people can enrich themselves at our expense.
Re:Waymo halts service during S.F. blackout after causing tr... by SR2Z on Sunday December 21, 2025 @09:34PM (#46350738)
In this country, if heart disease or cancer doesn't kill you, a car probably did.

Until "Waymos lessons" are killing people at that rate, I am 100% OK with a Waymo making my trips an extra 5 minutes longer every 50th trip or whatever else the real stat is.

I was curious if Waymo has even been involved with a crash that killed someone, so I looked it up. The answer is yes - there was a Tesla going 98mph in SoMa whose driver died after hitting a Waymo. Clearly the Waymo's fault!

Re:Waymo halts service during S.F. blackout after causing tr... by SoftTalker on Sunday December 21, 2025 @01:42PM (#46347101)
A fire truck can simply push the waymo out of the way.
Re:Waymo halts service during S.F. blackout after causing tr... by justin66 on Sunday December 21, 2025 @02:45PM (#46347694)
It can’t push a block of gridlocked traffic that cannot move because of the dead waymos present out of the way.
Re:Waymo halts service during S.F. blackout after causing tr... by SR2Z on Sunday December 21, 2025 @09:38PM (#46350766)
Unless a few Waymos have gridlocked traffic, I'm not sure you can still blame them for this.
Re:Waymo halts service during S.F. blackout after causing tr... by JumpCrisscross on Sunday December 21, 2025 @01:52PM (#46347184)
> A fire truck can simply push the waymo out of the way

Sure, but it would be notable if one had to. If none had to, we have a problem to solve, not a catastrophe.

Re:Waymo halts service during S.F. blackout after causing tr... by MBCook on Sunday December 21, 2025 @02:11PM (#46347369)
It can do that with a normal driver too. Doesn’t make it ok for there to ever be a situation where they need to when the target vehicle/driver is just fine and capable of doing it themselves.
Re:Waymo halts service during S.F. blackout after causing tr... by themafia on Sunday December 21, 2025 @04:20PM (#46348609)
> Perhaps they haven’t fully thought through the ramifications of it though.

There is a chorus of voices here on HN that have tried to do this openly, obviously, myself included. It seems to be almost universally derided by people who apparently assume that we're just trying to hurt a start up out of anti-environmental sentiment and jealousy.

There are more ways to get "self-driving cars" wrong than there are to get it right. Driving is far more complex than the hackers here on Hacker News seem to want to concede, and even if that wasn't the case, I'm not sure where the sentiment that a trillion dollar corporation is naturally going to implement this system with the best interests of society in hand comes from.

It's a genuine frustration here.

Re:Waymo halts service during S.F. blackout after causing tr... by dmix on Sunday December 21, 2025 @04:34PM (#46348748)
What was the better solution here then? Assuming there's hundreds or thousands of self-driving cars suddenly driving in environment without any traffic lights. In the pictures you can see six Waymo cars at a single intersection. Assuming some of them had passengers should they all try to turn at the intersection anyway, when their LIDAR says the lane is likely free and pull over to the side? Is that the safest option? Should there be human police to direct the self driving cars through intersections? Or wait out the temporary electricity failure?

I believe the answer is far more complicated than it seems and in practice having the cars stay still might have been the safest option any of the parties could agree on (Waymo's office, the city traffic people, state regulators, etc).

There are people thinking this stuff out and those cars can 100% pull over automatically but an explicit choice was made not to do so for safety.

Re:Waymo halts service during S.F. blackout after causing tr... by MBCook on Sunday December 21, 2025 @04:46PM (#46348850)
I think part of the problem is they’ve made it our problem.

Look I like Waymo. I think they’re neat and I trust them far more than any of the other companies. But in my mind being able to handle stuff like this is just a requirement to be on the roads in any non-trivial number. Like if they had two vehicles in this happened then OK that’s a problem but it was two vehicles in an entire city.

When you have enough on the road that you can randomly have six at one intersection you should absolutely be able to handle this by then.

I want them to do good. I want them to succeed. But just like airliners this is the kind of thing where people’s safety comes first.

What we saw happen looks like the safety of the Waymo and its passengers came above everyone else despite having no need to do that. There are certainly some situations where just staying put is the best decision.

The power went out and there are no other hazards on the road is not one of them. They made things worse for everyone else on average in a foreseeable situation where it was totally unnecessary. And that’s not OK with me.

This feels like the kind of thing that absolutely should’ve been tested extremely well by now. Before they were allowed to drive in large volumes.

Re:Waymo halts service during S.F. blackout after causing tr... by macintux on Sunday December 21, 2025 @05:56PM (#46349479)
Effectively they’ve turned any edge case into a potential city-wide problem and PR nightmare.

One driver doesn’t know how to handle a power outage? It’s not news. Hundreds of automated vehicles all experience the same failure? National news.

Re:Waymo halts service during S.F. blackout after causing tr... by scoofy on Sunday December 21, 2025 @07:40PM (#46350150)
I live in the affected neighborhood. There were hundreds of drivers that did not know how to handle a power outage... it was a minority of drivers, but it was a nontrivial, but nominally large number. I even saw a Muni bus blow through a blacked out intersection. The difference is the Waymos failed in a way that prevented potential injury, whereas the humans who failed, all fail in a way that would create potential injury.

I wish the Waymos handled it better, yes, but I think that the failure state they took is preferable to the alternative.

Re:Waymo halts service during S.F. blackout after causing tr... by Dylan16807 on Sunday December 21, 2025 @09:26PM (#46350704)
Locking down the roads creates a lot of potential injuries too.

And "don't blow through an intersection with dead lights" is super easy to program. That's not enough for me to forgive them of all that much misbehavior.

Re:Waymo halts service during S.F. blackout after causing tr... by scoofy on Sunday December 21, 2025 @09:43PM (#46350788)
> is super easy to program

What?!? We’re talking about autonomous vehicles here.

Re:Waymo halts service during S.F. blackout after causing tr... by Dylan16807 on Monday December 22, 2025 @12:14AM (#46351538)
The cars already know those are intersections with lights. I'm not talking about that part. Just the basic logic that you don't go through at speed unless there is a green (or yellow) light.
Re:Waymo halts service during S.F. blackout after causing tr... by anticensor on Monday December 22, 2025 @01:32AM (#46351879)
The lights out should be treated as all way red, including pedestrians.
Re:Waymo halts service during S.F. blackout after causing tr... by Dylan16807 on Monday December 22, 2025 @02:18AM (#46352020)
Not all way red, that leads to exactly the problem in the story of blocking traffic. Lights out needs to be a stop sign.
Re:Waymo halts service during S.F. blackout after causing tr... by anticensor on Monday December 22, 2025 @09:18AM (#46354299)
Yes, it does lead to blocking the traffic but that is the only safe action to do in such an intersection; if an intersection has traffic lights, there's enough traffic that stop&give way is not a viable operation.
Re:Waymo halts service during S.F. blackout after causing tr... by Dylan16807 on Monday December 22, 2025 @01:54PM (#46357390)
Very wrong. Dangerously wrong. Please don't block the road if you end up in an outage.
Re:Waymo halts service during S.F. blackout after causing tr... by prmoustache on Monday December 22, 2025 @01:59PM (#46357457)
Usually in that case you would make it a priority to the right /or left so that everyone only has to look at one side (besides the pedestrians) and in a very busy intersection people with common sense and education naturally do an alternance where you give way to every other car.

I don't know if waymos are programmed for that and it could very well be that there were so many pedestrian crossing it wouldn't apply it anyway.

Re:Waymo halts service during S.F. blackout after causing tr... by scoofy on Monday December 22, 2025 @04:38AM (#46352616)
>The cars already know those are intersections with lights.

That's not how any of this works. You can anthropomorphize all you like, but they don't "know" things. They're only able to predictably respond to their training data. A blackout scenario is not in the training data.

Re:Waymo halts service during S.F. blackout after causing tr... by floxy on Monday December 22, 2025 @01:03PM (#46356701)
>They're only able to predictably respond to their training data. A blackout scenario is not in the training data.

Is there anyway to read more about this? I'm skeptical that there aren't any human coded traffic laws in the Waymo software stack, and it just infers everything from "training data".

Re:Waymo halts service during S.F. blackout after causing tr... by Dylan16807 on Monday December 22, 2025 @01:53PM (#46357372)
Even ignoring the observations we can make, the computers have maps programmed in. Yes they do know the locations of intersections, no training necessary.

And the usual setup of an autonomous car is an object recognition system feeding into a rules system. If the object recognition system says an object is there, and that object is there, that's good enough to call "knowing" for the purpose of talking about what the cars should do.

Or to phrase things entirely differently: Finding lights is one of the easy parts. It's basically a solved problem. Cutting your speed when there isn't a green or yellow light is table stakes. These cars earn 2 good boy points for that, and lose 30 for blocking the road.

Re:Waymo halts service during S.F. blackout after causing tr... by callc on Sunday December 21, 2025 @10:21PM (#46350969)
Specifically identifying road signs, traffic lights, and dead traffic lights is a narrow problem that has feasible solutions. To the point where we can reasonably say “yeah, this sub-component basically works perfectly.”

Compared to the overall self-driving problem which is very much not a super easy problem.

Re:Waymo halts service during S.F. blackout after causing tr... by godelski on Monday December 22, 2025 @01:57AM (#46351957)
I wouldn't say "super easy" but if an autonomous vehicle isn't programmed to handle:

  1: streetlight with no lights
  2: streetlight with blinking red
    2.5: streetlight with blinking yellow
Then they are 100% not qualified to be on the road. Those are basic situations and incredibly easy to replicate, simulate, and incorporate into the training data.

That is to say, they are not edge cases.

Dealing with other drivers in those settings is much harder to do but that's a different problem and you should be simulating your car in a wide variety of other driver dynamics. From everyone being very nice to everyone being hyper aggressive and the full spectrum in between.

Re:Waymo halts service during S.F. blackout after causing tr... by scoofy on Monday December 22, 2025 @04:37AM (#46352604)
If you are just arguing that they're not qualified to be on the road, then I agree with you. I've been an autonomous vehicle skeptic for a long time, mainly because in think our automobile transportation system is inherently dangerous. It's going to be a tough sell though, considering that they are already -- generally -- better drivers than a nontrivial number of human beings.

It's a tough question. The entire reason I'm defending this shortcoming is exactly that I prefer the fail-safe shutdown to any attempt to navigate bizarre, barely conforming to traffic code, blacked out intersections that are inherently dangerous.

Re:Waymo halts service during S.F. blackout after causing tr... by freejazz on Monday December 22, 2025 @01:31PM (#46357096)
> The difference is the Waymos failed in a way that prevented potential injury

No one was injured this time but that's a huge assumption on your part

Re:Waymo halts service during S.F. blackout after causing tr... by scoofy on Monday December 22, 2025 @02:55PM (#46358217)
I mean, yes, if the Waymo's could safely pull over, or even know how to handle every emergency situation, I think that would be better. I'd say that's a big ask though. Training autonomous vehicles for blackouts, fires, earthquakes, tornadoes, hail storms, landslides, sinkholes, tsunamis, floods, or even just fog is not really feasible given that most humans won't even navigate the properly. I'll keep saying it: I'm glad the cars were set to fail-safely when they encountered a situation they couldn't understand.

I honestly wish the human drivers blowing through intersections that night would have done the same. It's miracle no one was killed.

Re:Waymo halts service during S.F. blackout after causing tr... by freejazz on Tuesday December 23, 2025 @12:24PM (#46367134)
That's a non-response response

>I honestly wish the human drivers blowing through intersections that night would have done the same. It's miracle no one was killed.

A bit deflective, huh?

Re:Waymo halts service during S.F. blackout after causing tr... by scottbez1 on Sunday December 21, 2025 @07:40PM (#46350151)
Yeah, the correlated risk with AVs is a pretty serious concern. And not just in emergencies where they can easily DDOS the roads, but even things like widespread weaknesses or edge cases in their perception models can cause really weird and disturbing outcomes.

Imagine a model that works real well for detecting cars and adults but routinely misses children; you could end up with cars that are 1/10th as deadly to adults but 2x as deadly to children. Yes, in this hypothetical it saves lives overall, but is it actually a societal good? In some ways yes, in some ways it should never be allowed on any roads at all. It’s one of the reasons aggregated metrics on safety are so important to scrutinize.

Re:Waymo halts service during S.F. blackout after causing tr... by MBCook on Sunday December 21, 2025 @06:20PM (#46349659)
Right. You know there are humans somewhere in the city who got confused or scared and mess up too. Maybe a young driver who is barely confident in the first place on a temporary permit, or just someone who doesn’t remember what you do and was already over-stressed.

Whatever, it happens.

This was a (totally unintentional) coordinated screw up causing problems all over as opposed to one small spot.

The scale makes all the difference.

Re:Waymo halts service during S.F. blackout after causing tr... by necovek on Monday December 22, 2025 @12:08AM (#46351501)
Definitely. The question then becomes how do they respond on the stimulus of other, more experienced drivers?

Eg. if they see 5 cars going around them and "solving" the intersection, do they get empowered to do the same? Or do some annoying honkers behind them make them bite the bullet and try their hand at passing it (and not to worry, other drivers will also make sure no harm comes to anyone even if you make a small mistake)? Human drivers, no matter how inexperienced, will learn on the spot. Self-driving vehicles can "learn" back in the SW department.

Yes, driving is a collaborative activity which requires that we all partner on finding most efficient patterns of traffic when traffic lights fail. Self-driving cars cannot learn on the spot, and this is the main difference between them and humans: you either have them trained on every situation, or they go into weird failure modes like this.

Re:Waymo halts service during S.F. blackout after causing tr... by potato3732842 on Monday December 22, 2025 @12:06PM (#46356003)
Was it unintentional? These systems were programmed to fall bad into "terrified 16yo/elderly lady" behavior because that's what's most legally defensible.
Re:Waymo halts service during S.F. blackout after causing tr... by wiml on Sunday December 21, 2025 @04:50PM (#46348886)
We already have a solution, it's written down in the traffic laws. If the signals fail, treat the intersection roughly like a four-way stop. Everybody learns this in drivers' ed. It's not obscure. If the cars can't follow traffic rules maybe they're not ready to be on the streets unsupervised.
Re:Waymo halts service during S.F. blackout after causing tr... by dmix on Sunday December 21, 2025 @05:07PM (#46349070)
That may be the rules for humans, particuarly people who are always in a rush and won't stay still anyway. With a major intersection turned four-way stop you have lots of humans making very complex decisions and taking a lot of personal risk. If multiple self driving cars make the choice at the wrong time you could jam up an intersection and create a worse traffic issue, or kill a passenger.

It's all a careful risk calculation, those self driving cars need to determine if it's safe to continue through an intersection without the traffic lights their computers spent millions of hours to train on (likewise with humans). That's a tough choice for a highly regulated/insured company running thousands of cars.

If anything, their programming should only take such a risk to move out of the way for a fire truck/ambulance.

Re:Waymo halts service during S.F. blackout after causing tr... by markdown on Sunday December 21, 2025 @08:45PM (#46350489)
> If multiple self driving cars make the choice at the wrong time

Would would they do that? It's a hive, isn't it?

Re:Waymo halts service during S.F. blackout after causing tr... by NetMageSCW on Monday December 22, 2025 @01:24PM (#46357012)
A hive that may not be able to talk depending on how much infrastructure was affected by the power failures.
Re:Waymo halts service during S.F. blackout after causing tr... by necovek on Monday December 22, 2025 @12:12AM (#46351524)
In a traffic jam situation, getting into a collision that "kills a passenger" is usually very hard (10-20mph collision between cars won't get anyone dead, except maybe for someone who gets another health condition triggered). With large cars in the road today, pedestrians are at a great risk, but similarly have more time to react due to slower speeds.
Re:Waymo halts service during S.F. blackout after causing tr... by bsder on Sunday December 21, 2025 @06:03PM (#46349537)
The problem seems to be that the Waymo cars did exactly as you requested and treated the intersections like 4 way stops but kept getting displaced by more aggressive drivers who simply slowed and rolled.

How many non-Waymo accidents happened at intersections during this time? I suspect more than zero given my experiences with other drivers when traffic lights go off. Apparently, Waymo's numbers are zero so humans are gonna lose this one.

The problem here is that safety and throughput are at odds. Waymo chose safety while most drivers chose throughput. Had Waymo been more aggressive and gotten into an accident because it wouldn't give way, we'd have headlines about that, too.

The biggest obstacle to self-driving is the fact that a lot of driving consists of knowing when to break the law.

Re:Waymo halts service during S.F. blackout after causing tr... by MBCook on Sunday December 21, 2025 @06:23PM (#46349678)
> The problem here is that safety and throughput are at odds. Waymo chose safety while most drivers chose throughput.

Did they? They chose their safety. I suspect the net effect of their behavior made the safety of everyone worse.

They did such a bad job of handling it people had to go around them, making things less safe.

We know what people are like. Not everyone is OK doing 2-3 mph for extended time waiting for a Waymo to feel “safe”.

Operating in a way that causes large numbers of other drivers to feel the need to bypass you is fundamentally worse.

Re:Waymo halts service during S.F. blackout after causing tr... by bsder on Sunday December 21, 2025 @09:50PM (#46350832)
> Did they? They chose their safety. I suspect the net effect of their behavior made the safety of everyone worse.

There is no viable choice other than prioritizing the safety of your rider. Anything less would be grounds for both lawsuits and reputational death.

The fact that everybody else chose throughput over safety is not the fault of Waymo.

Will you also complain when enough Waymo cars start running on the freeways that a couple of them in a row can effectively enforce following distances and speed limits, for example?

Re:Waymo halts service during S.F. blackout after causing tr... by ebiederm on Sunday December 21, 2025 @10:14PM (#46350931)
Obstructing traffic is also against the law.

Something I had pounded into me when I drove too slowly and cautiously during my first driving test, and failed.

Those Waymos weren't moving which is a pretty egregious example of obstructing traffic.

An old rule of thumb is every time a service expands by an order of magnitude there are new problems to solve. I suspect and hope this is just Waymo getting to one of those points with new problems to solve, and they will find a way to more graciously handle this in the future.

Re:Waymo halts service during S.F. blackout after causing tr... by ycombobreaker on Sunday December 21, 2025 @10:16PM (#46350942)
> Will you also complain when enough Waymo cars start running on the freeways that a couple of them in a row can effectively enforce following distances and speed limits, for example?

In my state, that would itself be a traffic violation, so yes I would. The leftmost lane on an interstate highway is reserved for passing. An autonomous vehicle cruising in that lane (regardless of speed) would therefore be programmed in a way that deliberately violates this law.

Enforcement is its own challenge, whether robots or humans.

Re:Waymo halts service during S.F. blackout after causing tr... by bsder on Sunday December 21, 2025 @11:32PM (#46351337)
> The leftmost lane on an interstate highway is reserved for passing.

Sadly, in most states, this is not true anymore. Most of those laws have been repealed.

I was very pleasantly surprised when I was in Colorado that they had explicit signs saying that if you had 5 (I think) or more cars behind you that you were supposed to pull right and let them pass.

However, I wasn't really thinking about a Waymo cruising in the left lane but simply 4 or 5 Waymo's in the right lane going right at the speed limit with proper following distance. That's going to effectively lock the right lane to the speed limit which then means that even a single other car would lock the left lane to the speed limit as well. Basically, even a couple of Waymos in the right lane would drop freeway speeds dramatically.

Re:Waymo halts service during S.F. blackout after causing tr... by phil21 on Monday December 22, 2025 @12:56AM (#46351750)
I was under the impression these laws have become much more common over the past decade or two when they were a rarity beforehand. My home state (MN) for example didn’t have one for the first 15 years or so of me driving. Much to my chagrin after I learned about how much better life can be by spending time in a state (KY) where it was strictly enforced by both social convention and law enforcement.

Surprisingly it seems to even be moderately enforced these days even in Minnesota, which I’d have bet money on never happening since it’s a state pastime to play passive aggressive traffic cop for many.

https://www.reddit.com/r/coolguides/comments/1fuw97s/a_cool_...

Perhaps not the most trusted source on the matter, but at a glance it seems more or less the vast majority of states have laws that effectively “ban” slow moving traffic in the left lane from impeding traffic. Enforcement I’m sure will be all over the map - likely down to even a county level within individual states.

While I do wish all states were “purple” or above in that map, the situation seems largely up to how state patrol and other agencies want to enforce it.

I’ve seen it enforced now with my own two eyes in KY, WI, MN, and IL.

Re:Waymo halts service during S.F. blackout after causing tr... by NetMageSCW on Monday December 22, 2025 @01:24PM (#46357005)
In Virginia it is a $200 fine to obstruct traffic in the left lane. Not that it stops the anti destination league.
Re:Waymo halts service during S.F. blackout after causing tr... by freejazz on Monday December 22, 2025 @01:34PM (#46357128)
>The problem seems to be that the Waymo cars did exactly as you requested and treated the intersections like 4 way stops but kept getting displaced by more aggressive drivers who simply slowed and rolled.

So, you're saying Waymo can't handle a regular 4 way stop sign given how everyone else on the road drives? That's not a problem?

Re:Waymo halts service during S.F. blackout after causing tr... by bsder on Wednesday December 24, 2025 @02:44AM (#46373385)
Waymo cars handle 4 way stops just fine.

When traffic lights go out, that is supposed to be a 4 way stop with appropriate yielding of right-of-way. The problem is that most human drivers can't deal with even a simple, low-traffic stop sign 4-way-stop reliably, and these are complex 4-way-stops with lots of right-of-way changes when power is off.

For example, navigating intersections in San Diego during the blackout was a disaster with lots of accidents and that long predated Waymo.

Re:Waymo halts service during S.F. blackout after causing tr... by freejazz on Wednesday December 24, 2025 @12:12PM (#46377304)
People roll through 4 way stop signs all the time
Re:Waymo halts service during S.F. blackout after causing tr... by ethanwillis on Sunday December 21, 2025 @06:48PM (#46349843)
The better solution? To not fetishize technology.
Re:Waymo halts service during S.F. blackout after causing tr... by pinnochio on Sunday December 21, 2025 @04:43PM (#46348822)
Uh, how about having their remote driver staff take over?

> but an explicit choice was made not to do so for safety.

You know this how?

Re:Waymo halts service during S.F. blackout after causing tr... by MBCook on Sunday December 21, 2025 @04:48PM (#46348868)
That’s what they usually do. The assumption here is that due to the blackout or some other related issue the human drivers were unavailable.

However even if that’s not true if they have more cars than human drivers there’s gonna be a problem until they work through the queue. And the bigger that ratio, the longer it will take.

Re:Waymo halts service during S.F. blackout after causing tr... by autoexec on Sunday December 21, 2025 @09:24PM (#46350686)
I guess that in a blackout they should just have the cars park somewhere safely. Maybe it'd be best to never have more cars on the road than assisting/available human drivers. As soon as no human drivers are available to take over for outage/staffing/whatever reason all cars should just pull over and stop.
Re:Waymo halts service during S.F. blackout after causing tr... by bink on Sunday December 21, 2025 @05:00PM (#46348984)
This only works if they have cell service and enough human drivers to handle all of their cars.
Re:Waymo halts service during S.F. blackout after causing tr... by wrsh07 on Sunday December 21, 2025 @08:41PM (#46350466)
Tbh I'm surprised waymo didn't have remote monitors who could handle cars at intersections or safely pull to the side
Re:Waymo halts service during S.F. blackout after causing tr... by NetMageSCW on Monday December 22, 2025 @01:26PM (#46357030)
Even if they did, did those monitors have power? And I’m sure they don’t have enough monitors for one to one with the cars.
Re:Waymo halts service during S.F. blackout after causing tr... by dragonwriter on Sunday December 21, 2025 @08:54PM (#46350546)
> Assuming there's hundreds or thousands of self-driving cars suddenly driving in environment without any traffic lights.

Self-driving cars should (1) know how to handle stops, and (2) know that the rules for a failed traffic light (or one flashing red) are those for an all-way stop.

Re:Waymo halts service during S.F. blackout after causing tr... by necovek on Monday December 22, 2025 @12:16AM (#46351554)
In a traffic jam situation, all-way stop is a "blocked intersection" if every vehicle obeyed it strictly (if there are cars coming from every direction, nobody has right of way and you can't apply the rule of yielding right).

Humans, luckily, never follow the rules to the letter, which made it reasonable to put them down like this: some will be more impatient/aggressive, others will establish eye contact and wave one another through, etc.

In a situation like this where you've got "drivers" who can't collaborate and learn on the spot, the rule does not make sense.

Re:Waymo halts service during S.F. blackout after causing tr... by dragonwriter on Monday December 22, 2025 @03:37AM (#46352285)
> In a traffic jam situation, all-way stop is a "blocked intersection" if every vehicle obeyed it strictly (if there are cars coming from every direction, nobody has right of way and you can't apply the rule of yielding right).

The first arrived rule (which applies before yield right) is usually unambiguous in a traffic jam situation (since it will also be the position where the last car went the least recently, and everyone at the intersection will have been close enough to see through the prior cycle.)

Re:Waymo halts service during S.F. blackout after causing tr... by necovek on Monday December 22, 2025 @11:58AM (#46355906)
I wasn't aware of the formal first-arrived rule (as I said, we don't have 4-way stop intersections). Obviously, still imperfect for the original point of arrival (if 4 vehicles come at the same time), but once the pattern is established, it can keep flowing.

I apply the alternating pattern even when I have right of way to keep the traffic flowing.

Re:Waymo halts service during S.F. blackout after causing tr... by autoexec on Sunday December 21, 2025 @09:17PM (#46350654)
> What was the better solution here then?

Just pulling over and getting out of the way really would help. There's no reason a human couldn't do the same safely. Not beta testing your cards on public roads would really be ideal. Especially without human drivers ready to take over.

Re:Waymo halts service during S.F. blackout after causing tr... by NetMageSCW on Monday December 22, 2025 @01:25PM (#46357022)
Is pulling over possible in most cities?
Re:Waymo halts service during S.F. blackout after causing tr... by autoexec on Monday December 22, 2025 @05:30PM (#46359951)
Hopefully, we need people lined up at intersections to do it all the time in order to make way for emergency vehicles.
Re:Waymo halts service during S.F. blackout after causing tr... by Zopieux on Monday December 22, 2025 @07:38PM (#46361040)
The better solution is reducing America's dependency on cars in urban centers to make room for vehicles which actually need to drive, like emergency services, while the rest of the general public uses an excellent public transportation network, whenever politicians finally grow the pair to build one.

Unfortunately HN is still not ready for that discussion despite the year being 2026 in a few days.

Re:Waymo halts service during S.F. blackout after causing tr... by confidantlake on Sunday December 21, 2025 @08:28PM (#46350407)
> I'm not sure where the sentiment that a trillion dollar corporation is naturally going to implement this system with the best interests of society in hand comes from

The sentiment comes from the corporation itself. With this much money at stake you know they have a hand in steering the conversation and that includes on sites such as this.

Re:Waymo halts service during S.F. blackout after causing tr... by lo_zamoyski on Sunday December 21, 2025 @08:53PM (#46350540)
Willfulness.
Re:Waymo halts service during S.F. blackout after causing tr... by Dylan16807 on Sunday December 21, 2025 @09:19PM (#46350663)
> There is a chorus of voices here on HN that have tried to do this openly, obviously, myself included.

Maybe I'm reading things wrong, but it sounds like the top comment wants waymo to be better, and you want waymo to be off the roads. You're not talking about the same kind of "thinking through the ramifications".

Re:Waymo halts service during S.F. blackout after causing tr... by kedean on Monday December 22, 2025 @01:37PM (#46357166)
> anti-environmental sentiment

I feel like self-driving cars are, pretty objectively, the single least environmentally friendly mass transit solution (more cars being made and using more rare-earth minerals to produce them, more cars being driven rather than increasing public transit usage). What's the argument that not liking self-driving cars is "anti-environmental"?

Re:Waymo halts service during S.F. blackout after causing tr... by MuffinFlavored on Sunday December 21, 2025 @05:27PM (#46349228)
What if there was a herd of people off-shore on-call willing to basically "RDP in" and take over control (human takeover) of the entire fleet when needed? I could see that being an attractive pitch.
Re:Waymo halts service during S.F. blackout after causing tr... by scottbez1 on Sunday December 21, 2025 @07:49PM (#46350197)
Latency makes this hard even with local connections, it’s essentially impossible due to physics to do it offshore.

And I believe Waymo remote access only allows providing high level instructions (like pull over, take the next right, go around this car, etc) precisely because full direct control with a highly and variably latent system is very hard/dangerous.

And in an emergency situation you’re likely to have terrible connectivity AND high level commands are unlikely to be sufficient for the complexity of the situation.

Re:Waymo halts service during S.F. blackout after causing tr... by Smoosh on Sunday December 21, 2025 @05:45PM (#46349380)
I suspect that in a large scale disaster/emergency the communications systems may be disrupted and it may not be possible to remotely control the vehicles.

Perhaps in such cases they can pull over in a safe place, or if they have an occupant ask them if they wish to continue the journey or stop.

Perhaps they already do this, I have no experience with autonomous vehicles.

Re:Waymo halts service during S.F. blackout after causing tr... by bombcar on Sunday December 21, 2025 @05:44PM (#46349363)
This very scenario could involve no cell signal.
Re:Waymo halts service during S.F. blackout after causing tr... by uqual on Sunday December 21, 2025 @05:59PM (#46349509)
Waymo may discover that heavy equipment (large fire trucks can easily push Waymo out of the way if it can find somewhere to push it to) WILL move the cars (at least if there is no one in them at the time) in such cases. I recall the scenes during recent wildfires where abandoned cars were blocking roads and a skip loader was just picking up the cars and dumping/pushing them to the side of the road/over the edge - causing extensive damage to some of them.

Decades ago I recall talking to a fireman expressing a question of what happened if there was a car blocking their access in an emergency and he made it clear that the bumper on the front of the truck and the truck's healthy diesel engine would usually take care of the problem very quickly.

Re:Waymo halts service during S.F. blackout after causing tr... by autoexec on Sunday December 21, 2025 @09:26PM (#46350700)
I wouldn't cry for waymo if a bunch of their cars got bulldozed out of the way but that's still unacceptable since it slows down emergency vehicles and first responders.
Re:Waymo halts service during S.F. blackout after causing tr... by mmooss on Sunday December 21, 2025 @10:52PM (#46351142)
There are people in the Waymos. It's like not moving parked cars.
Re:Waymo halts service during S.F. blackout after causing tr... by delfinom on Sunday December 21, 2025 @11:08PM (#46351218)
The jaws of life can make quick work of any locked doors before continuing to bulldoze a car out of the way.
Re:Waymo halts service during S.F. blackout after causing tr... by phil21 on Monday December 22, 2025 @01:05AM (#46351781)
Waymo doesn’t lock you into the vehicle does it? Would seem like kidnapping to me if so.
Re:Waymo halts service during S.F. blackout after causing tr... by animal_spirits on Sunday December 21, 2025 @06:30PM (#46349738)
During Japan's 2011 earthquake, many roads were gridlocked by human drivers.
Re:Waymo halts service during S.F. blackout after causing tr... by catlikesshrimp on Monday December 22, 2025 @04:00AM (#46352402)
It is acceptable when the situation is so dire that most human drivers can't handle the situation. It is not acceptable when the human can handle the situation but the machine is dragging the flow back.
Re:Waymo halts service during S.F. blackout after causing tr... by shuckles on Sunday December 21, 2025 @06:55PM (#46349883)
In case of a natural disaster, it’s guaranteed that human drivers will abandon their cars on the road and cause gridlock. It happens all the time. Emergency vehicles are built to handle it.
Re:Waymo halts service during S.F. blackout after causing tr... by Natsu on Sunday December 21, 2025 @09:22PM (#46350679)
I'm surprised the don't know to treat it as a 4-way stop, either. This kind of outage is pretty common in Phoenix, too, which is another major Waymo market. It probably happens to at least some part of the city every monsoon season.
Re:Waymo halts service during S.F. blackout after causing tr... by nashashmi on Sunday December 21, 2025 @11:08PM (#46351219)
In cases where the traffic signal is not working, it is known that the FSD has to take on a more challenging role of reading traffic agent gestures. I think they have that functionality built in. But not when neither traffic signal is working nor traffic agent is present.

The basic thing is to treat everything like a four-way stop sign.

Re:Waymo halts service during S.F. blackout after causing tr... by johnnyanmac on Sunday December 21, 2025 @11:14PM (#46351252)
>I’m AMAZED they’re not designed to handle this better.

This has been the MO for "tech companies" for the past 20 years. Meanwhile I'm told I'm paranoid when the industry of "move fast or break things" decides to move into mission/safety critical industries and use its massive wealth to lobby for deregulation to maintain its habits.

We certainly have BS regulations done to constrain competition. But I'd wager a good 80% of them exist for good reason.

Re:Waymo halts service during S.F. blackout after causing tr... by NetMageSCW on Monday December 22, 2025 @02:44PM (#46358056)
I wouldn’t wager past 50%, especially since laws don’t have expiration dates.