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Why emergency braking systems sometimes hit parked cars and lane dividers

arstechnica.com

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Re: Why emergency braking systems sometimes hit parked cars and lane dividers

#41
post #21

Earlier quoted context omitted.

Doesn't seem to be a working emergency braking system, as those poor souls who plowed into stationary obstacles found out.

Supposedly automated braking is only in effect when the "driving assustance package"* is enabled in Teslas. *autopilot

It doesn't seem to even work then, considering the fatal accident had the vehicle ACCELERATING into the crash barrier on AutoPilot.

Re: Why emergency braking systems sometimes hit parked cars and lane dividers

#42
post #8

Until I read this article, I thought that the all-optical adaptive cruise control system of my BMW i3 was clearly inferior to modern radar-based gear. I now see at least one use case -- stationary objects -- where the i3 setup has an edge. (But the i3 setup suffers mightily in low-contrast and low-sun-angle scenarios.)

And Tesla's Model 3 has optical cameras too, but they've chosen to continue to use radar only for automatic emergency braking for reasons only known to them (easier to maintain due to their older radar only fleet?).

But, yes, the i3 and Subaru have optical AEB that works great. Something people like to gloss over again and again in these discussions while talking about radar's limitations (and ignoring that the Model 3 has under-utilized forward facing optical cameras).

Re: Why emergency braking systems sometimes hit parked cars and lane dividers

#43

I still don't get why do Autocrasher systems think it's better to ignore stationary objects even whey it's driving towards it at a high speed! Sure, slamming in the brakes is a bad idea. This doesn't mean the system can't start to slow down or change the direction of the car.

A lot of new cars come equipped with emergency braking systems, including affordable cars like Hondas. There has not been an increase in accidents due to these systems, nor has there been an epidemic of cars autonomously slamming on their brakes on the freeway for no reason. So I tend to think the manufacturers got the engineering and safety trade-offs right for those cars.

The big difference is that people who drive those cars do not generally expect that their cars are self-driving. Tesla owners do seem to expect that, and consequently the decisions made about trade-offs for, say, automatic braking in a Honda Accord are not the right decisions for a Tesla Model S.

The bottom line is this: if people think their cars can drive themselves, the cars really need to be able to do that or there are going to be crashes.

Re: Why emergency braking systems sometimes hit parked cars and lane dividers

#45

Earlier quoted context omitted.

Let's be honest, actual mass deployed self driving tech is probably 20 years away at minimum. I personally might be able to enjoy it just before I retire.

Sources?

Every sane software developer who doesn't believe hype

Re: Why emergency braking systems sometimes hit parked cars and lane dividers

#46
post #31

What this shows is that Tesla isn’t even on the path to self-driving technology. It sounds like “Autopilot” has no world model (or an extremely basic one)—it ignores stationary objects because it can’t tell whether it’s approaching something on the side of a road that curves away versus an obstacle in the lane. It can’t tell because it doesn’t know what the car is going to do and what the lane is going to do. That’s…

Let's be honest, actual mass deployed self driving tech is probably 20 years away at minimum. I personally might be able to enjoy it just before I retire.

At the 2016 SXSW festival the Waymo project director said that deployment would happen incrementally depending on the local conditions.

>Not only might it take much longer to arrive than the company has ever indicated—as long as 30 years, said Urmson—but the early commercial versions might well be limited to certain geographies and weather conditions. Self-driving cars are much easier to engineer for sunny weather and wide-open roads, and Urmson suggested the cars might be sold for those markets first.

Urmson put it this way in his speech. "How quickly can we get this into people's hands? If you read the papers, you see maybe it's three years, maybe it's thirty years. And I am here to tell you that honestly, it's a bit of both."

He went on to say, "this technology is almost certainly going to come out incrementally. We imagine we are going to find places where the weather is good, where the roads are easy to drive — the technology might come there first. And then once we have confidence with that, we will move to more challenging locations."

https://web.archive.org/web/20160422140357/https://spectrum....

Re: Why emergency braking systems sometimes hit parked cars and lane dividers

#47
It's currently illegal to say that something can cure cancer, and this is because a lot of people just don't understand to the details of fighting cancer to really know what a cure means.

Perhaps we need to regulate how driver assistance is sold so that people don't accidentally think they can just keep their eyes off the road?

Re: Why emergency braking systems sometimes hit parked cars and lane dividers

#48
post #31

What this shows is that Tesla isn’t even on the path to self-driving technology. It sounds like “Autopilot” has no world model (or an extremely basic one)—it ignores stationary objects because it can’t tell whether it’s approaching something on the side of a road that curves away versus an obstacle in the lane. It can’t tell because it doesn’t know what the car is going to do and what the lane is going to do. That’s…

Let's be honest, actual mass deployed self driving tech is probably 20 years away at minimum. I personally might be able to enjoy it just before I retire.

I think these are already fairly close to human fatality rates. Tessa is well over 300,000 cars sold, if the average car has 10k miles that's 3 billion. Edit: actual number well over that https://electrek.co/2016/11/13/tesla-autopilot-billion-miles...

Using US fatality rates you would expect ~34 deaths from that. https://en.m.wikipedia.org/wiki/Transportation_safety_in_the... Edit, my numbers where low.

So, as far as I can tell they are close to human safty though perhaps not up to defensive driver in good conditions safe.

Re: Why emergency braking systems sometimes hit parked cars and lane dividers

#49
post #31

What this shows is that Tesla isn’t even on the path to self-driving technology. It sounds like “Autopilot” has no world model (or an extremely basic one)—it ignores stationary objects because it can’t tell whether it’s approaching something on the side of a road that curves away versus an obstacle in the lane. It can’t tell because it doesn’t know what the car is going to do and what the lane is going to do. That’s…

Let's be honest, actual mass deployed self driving tech is probably 20 years away at minimum. I personally might be able to enjoy it just before I retire.

Seems like something that will be most enjoyed post-retirement, a godsend for American seniors who don't live in cities with good mass-transit.
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