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wrt to the code: Although NASA found many aesthetic issues with the Toyota code, it did not find a smoking gun. [1] Presumably many other of their other produ
by diydsp 3y ago
wrt to the code: Although NASA found many aesthetic issues with the Toyota code, it did not find a smoking gun. [1] Presumably many other of their other products are running successfully with similar code. To put the comparison bt Toyota and Tesla in perspective: Toyota is an 85 year old company which ships about 10 million vehicles per year. Tesla has shipped almost 5 million vehicles total as of July 2023.[2]
[1] "In conducting their report, NASA engineers evaluated the electronic circuitry in Toyota vehicles and analyzed more than 280,000 lines of software code for any potential flaws that could initiate an unintended acceleration incident. "
"NASA engineers found no electronic flaws in Toyota vehicles capable of producing the large throttle openings required to create dangerous high-speed unintended acceleration incidents."
"The two mechanical safety defects identified by NHTSA more than a year ago – “sticking” accelerator pedals and a design flaw that enabled accelerator pedals to become trapped by floor mats – remain the only known causes for these kinds of unsafe unintended acceleration incidents."
https://www.transportation.gov/briefing-room/us-department-transportation-releases-results-nhtsa-nasa-study-unintended-acceleration https://www.transportation.gov/briefing-room/us-department-t...
[2] https://www.licarco.com/news/how-many-tesla-cars-have-been-sold https://www.licarco.com/news/how-many-tesla-cars-have-been-s...
- donkers 3y agoThat Toyota code was a total mess and NASA missed a few things. Take a look at this report from a CMU prof. https://news.ycombinator.com/item?id=31236303 https://news.ycombinator.com/item?id=31236303
- SilasX 3y agoCorrect, but, to bring it back to the original point, there's a difference between "sloppy code" and "sloppy code that cascades into unintended acceleration". The fact that it didn't actually cascade isn't a reason to keep writing sloppy code, of course. But such sloppiness also remains a red herring until they can actually find a concrete way that code could have contributed.
- warcher 3y agoLast I heard there was speculation that the CPU was vulnerable to an alpha particle flipped bit error and fixing that was the eventual patch. A one in a million shot happens ten times a year (sic) when you ship ten million cars a year covering many billions of miles.
- matthewdgreen 3y agoAn analysis by expert witnesses in the trial found that a small amount of memory corruption could trigger task death and unintended acceleration. The report did not find the cause of the memory corruption, but many software errors can corrupt memory. https://www.safetyresearch.net/Library/BarrSlides_FINAL_SCRUBBED.pdf https://www.safetyresearch.net/Library/BarrSlides_FINAL_SCRU...
- deleted 3y ago[deleted]