[kubectl_h]

I think a well designed winter specific FSD system is probably more safe in snow and ice than a human. For instance downshifting to ensure wheels continue to spin on slippery surfaces, subtle corrective steering to keep the vehicle within its lane, etc. should be easier for a FSD car since it won't panic and over-correct like most people do in those situations.

And if the car reduces speed when appropriate and some assholes start tailgating it, it won't suffer the anxiety of holding up 10 cars that want to drive beyond the safe, reasonable speed for the snowy/icy conditions.

[superkuh]

The problem with places that have real winters is that lanes migrate. They are not absolutely positioned. Nor are the sides of the road edges which may project well out into the street and parked cars even further. No road markings visible. Humans make their own lanes. This situation can happen for many weeks-long periods in a typical winter in, say, Minneapolis or Buffalo suburbs.

If a self-driving car does the right thing staying "in lane" while all the human drivers do the wrong thing flocking to new emergent paths (which swing back and forth across the "lanes"), then the self-driving car is wrong and dangerous. I'm not talking about when it's actively snowing either. I mean the snow on the ground just remaining there, covering things.

It's not about dealing with slippage or skill driving, it's about complete lack of context markers. I don't think any current or near future self-driving solution can adapt to this.

[kubectl_h]

That's fair and I've certainly experienced this where I live, which is north of Buffalo in latitude. Also frost heaves are no joke in non-city/non-highway roads and present another obstacle to FSD. I guess my point, if I had one, is I would hope FSD would be programmed to be as conservative as possible in adversarial winter conditions and not overreact to such conditions and that alone is enough to increase safety because humans, for various reasons, are not conservative enough. Hard to imagine for sure.

[ggreer]

Pretty much all electric cars have single speed transmissions, so there's no downshifting. And modern vehicles have electronic stability control, anti-lock brakes, automatic emergency braking, and several other safety systems. It's pretty hard to overreact with those enabled. The main issue is that people exceed safe speeds for the conditions, making them unable to brake or turn in time to avoid a collision.

Right now, most self-driving software will refuse to activate in conditions of poor visibility. I've had that happen with Tesla's FSD, though in that case it was snowing so much that the road should have been closed. Also when the snow is deep enough that your front bumper becomes a plow, it will refuse to activate.

[kubectl_h]

> And modern vehicles have electronic stability control, anti-lock brakes, automatic emergency braking, and several other safety systems

In ice none of these really stop overcorrection, or at least they don't in my 2020 truck on icy hill/mountain roads in Maine. And I've seen nice recent Volvos and BMWs with presumably the best safety tech in ditches up in the ski towns. The correct safe speed to drive on icy roads is not to drive at all of course, but people have to get places and people make mistakes. IME the assistive technology defaults don't do great on ice roads on some kind of up/down grade.

AFAIK drivers can still steer and brake themselves into a loss of control situation on ice regardless of safety features. So I guess I'm hoping once you take those two variables out of their hands, the FSD vehicles will be safer. Who knows though.

I went many years without a loss of control and the one time it did happen (logging roads with ice pack) was enough for me to buy Nokian studded winter tires to minimize the effect of ice as much as possible.

[eldaisfish]

on the contrary, no amount of safety systems can compensate for a loss of traction on ice and snow.

The surest way to be safe on snow covered roads is to not drive at all. Also, none of the electronic trickery is a replacement for real winter tires, which many people do not buy.