Tesla footage of braking before crash ahead [video]

Post by carterehsmith » Wed, Dec 28, 2016, 7:14 PM UTC

logicallee wrote: post #127

I think the most exciting thing (and we're way behind schedule on this, a lot of this could have easily been done literally 30 years ago, no problem at all), is caravan functionality, where a group of cars moves together. If you imagine 20 cars at a standstill for some reason, if they begin to move forward slowly but at the same time (less than 50 millisecond apart) because they're coordinated then they can get up to…

Post by loeg » Wed, Dec 28, 2016, 7:16 PM UTC

Tloewald wrote: post #230

sytelus wrote: post #67

This is great video to study on many levels beyond self-driving car. Some observations: * The car behind didn't show turn signal so probably driver wasn't paying attention. * A small car escaping with not too much damage while SUV rolls over many times * From physics point of view, the car behind produced almost perfect torque that started horizontal spin on SUV * Collisions with barrier at high speed can produce lot…

The SUV was pushed into the crash barrier and small car wasn't, so it's a highly unfair comparison. We did a lot of safety research before buying our current round of cars, and you need to not generalize about cars based on classifications like "SUV". Look at actual data from actual cars on actual roads, e.g. http://www.iihs.org/iihs/topics/driver-death-rates Note that you can find vehicles like the Honda Pilot that…

Post by mikeash » Wed, Dec 28, 2016, 7:17 PM UTC

GavinMcG wrote: post #267

mikeash wrote: post #225

Earlier quoted context omitted.

I'm just illustrating that you're doing the same thing you're advocating against, so it's rather self-defeating. If this sort of vague, personal thinking is OK, then your post is pointless. If it's not, then your post is bad. Either way, it doesn't make any sense.

There's a deep difference between a conversation inviting disagreement and those with solid evidence to step in, and a strident claim that will only be addressed and corrected by people who are willing to be confrontational.

Post by Naritai » Wed, Dec 28, 2016, 7:19 PM UTC

devrelm wrote: post #269

elif wrote: post #234

Earlier quoted context omitted.

I don't know your situation, but my experience driving big heavy stuff is that sometimes a yellow light does not provide enough warning to stop 55mph * crazy weight, and you sometimes find yourself with a dilemma of entering an intersection just after a light has changed, or a few seconds after the light has changed.

Right. I actually wonder how self-driving Semis will handle such a situation. Given that it's all math at that point, I wouldn't doubt if regulations surrounding minimum yellow-light timing are updated to more accurately represent the stop time of heavy loads. Otherwise it should be easy to prove in court that stopping in time would be impossible given the speed limit & weight restrictions (or lack thereof) in place…

Post by bdhess » Wed, Dec 28, 2016, 7:22 PM UTC

akamaka wrote: post #243

beat wrote: post #210

Yesterday, I was saying that autopiloted trucks would take over the long-haul trucking industries. This is why . Driver errors with semis on the highway kill thousands every year. This kind of technology will save lives - not just of the Tesla drivers (or other autopiloted drivers), but of the vehicles they don't hit.

Saving any lives in great, but trucks are a very small part of the problem. Out of 33883 US traffic deaths in 2009, 3380 involved trucks, and truck driver error was listed as a cause 26% of the time. Self driving long-haul trucks probably won't save "thousands" of lives, but certainly hundreds. http://www.trucking.org/ATA%20Docs/News%20and%20Information/...