In the baseline you're tailing the car in front of you with a focus on not letting anyone cheat and get in front of you, let's say 50 feet away. If you think about the speeds involved, a single additional car in front of you on the freeway (or even any additional cars) adds pretty miniscule time to the total commute. However, this doesn't mean I'm going to put my $100K car into a taxi pool to be used by (sometimes drunk) strangers I don't buy the argument that the cost of buying such a car will pay for itself. I'm confident that, eventually, self-driving cars will address all of these issues to some degree, and that will mark a turning point where it is better to leave driving to the cars than average drivers. Imagine how easy it is to obstruct a self-driving car for nefarious reasons. How will self-driving cars deal with humans that can perfectly predict their actions? I believe that bad drivers will take advantage of self-driving cars by cutting them off and failing to yield when they should.īecause human drivers have a sense of self preservation we can break the rules when we are about to be car-jacked or see an impending collision coming. How would a self driving car get through heavy fog or snow covered roads when there are only very difficult to decipher hints to the road edges? I don't do such things every day or even every month, but there are occasions where it is necessary to take unmarked detours. How will such a car respond to road workers redirecting traffic? How many times have you had to talk to someone outside of your car to obtain instructions on how to get around some obstacle, like a moving truck. Tesla seems to be making progress on full self driving, but real self driving (cars without steering wheels) still seems quite distant. “They never sent emails, everything was always verbal,” says the doctor from California, whose Tesla said it accelerated on its own in the fall of 2021 and crashed into two concrete pillars. If, despite the advice, “an involvement of a lawyer cannot be prevented”, this must be recorded.Ĭustomers that Handelsblatt spoke to have the impression that Tesla employees avoid written communication. Vehicle data should also not be released without permission. “Do not copy and paste the report below into an email, text message, or leave it in a voicemail to the customer,” it said. Each entry also contains a note in bold type that information, if at all, may only be passed on “VERBALLY to the customer”. The employees who enter this review into the system regularly make it clear that the report is “for internal use only”. The top priority is obviously: offer as little attack surface as possible.įor each incident there are bullet points for the “technical review”. The files show that employees have precise guidelines for communicating with customers. ![]() > How did the company deal with complaints? The Tesla files also provide information about this. The watchdog problems are especially inexcusable for a safety critical system. Normally you'd have multiple copies of such data structures that must agree, split the code up into separate isolated tasks so a failure of one doesn't stop the others, and implement basic stack overflow protection which again IIRC was available on the toolchain they were using but was not enabled. The code itself was poorly structured, with lots of critical things done in one big "god" task that if accidentally disabled by a single bool flip in RAM would ultimately disable many safety critical functions. However that function did not work reliably, making the watchdog useless. The ECU module includes watchdog support that runs on another chip or core (can't recall) that was intended to do backup monitoring of the main ECU - and especially it should have watched the brake pedal and of the brake was held for a minimum time it would override the ECU and force the accelerator to zero. If memory serves the main ECU control loop didn't check for stack overflows so excessive recursion could smash the global variables on the stack and accidentally turn off any number of ECU tasks - including the one responsible for monitoring the accelerator and brake.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |