• 1 Post
  • 23 Comments
Joined 2 years ago
cake
Cake day: August 24th, 2023

help-circle


  • I wonder if anyone actually watched the video…

    The car dropped them off at their planned location. They were told service may not be available for the next ride due to weather, but they did get another car in the end anyway. They were forced to exit at the end of the ride as everyone is. Then they got another ride. They weren’t dumped.

    Edit: Would they be dumped, it’s possible, but that’s not what happened here.

    This was their destination, which they then affirm they chose in the “dumped” portion -> “Unfortunately, we chose basically a park with no cover to be dropped off”, and they have text added to the screen “we got to our location via robotaxi, but weather became a concern”




  • So the headline is pretty inaccurate.

    There will be a person in the passenger seat. They aren’t a safety driver, or driver at all. They’ve been operating with an actual safety driver for around a year now for employees only.

    We don’t really know what they’ll do, but I highly doubt it’s jump for the wheel if it’s about to do something. I think it’s going to be more of a, the car decides it can’t do anything and is just sitting there incorrectly and they won’t have to dispatch someone to fix it like Waymo does. This could be a legitimate saftey issue if the car is just stuck on the road.

    Once they’re happy it’s not getting in situations like that they’ll remove the person and dispatch people as needed.

    But we won’t know for a few more days when we get reports of what they’re doing while the first people test it.








  • AEB braking was originally designed to not prevent a crash, but to slow the car when a unavoidable crash was detected.

    It’s since gotten better and can also prevent crashes now, but slowing the speed of the crash was the original important piece. It’s a lot easier to predict an unavoidable crash, than to detect a potential crash and stop in time.

    Insurance companies offer a discount for having any type of AEB as even just slowing will reduce damages and their cost out of pocket.

    Not all AEB systems are created equal though.

    Maybe disengaging AP if an unavoidable crash is detected triggers the AEB system? Like maybe for AEB to take over which should always be running, AP has to be off?



  • I think the older Tesla system (HW3) was around 300w, but I think the newer system is more now as they beefed up the compute, but I haven’t seen a number on that. The old system is pretty much maxed out though with no room to grow other then making things more efficient vs just more raw power usage.

    A lot of the older hardware back then wasn’t purpose built for driving and was more repurposed general graphical compute, so it was less efficient hence the 2Kw you were seeing. Tesla built ASICs for the driving computer to bring costs and power usage down.

    With the newer purpose built Nvidia stuff I’m sure that has brought the power draw down a lot though, likely relatively close (better or worse I don’t know) than Tesla’s watt per performance.

    edit: clarity






  • That’s not really true.

    He use lidar in SpaceX because he knows it’s the right tool for their specific job.

    His stance is it’s not that cameras are better, but that cameras have to be so good for a truly AV that putting effort into both means you’re not going to make your cameras good enough to do it and rely on lidar instead. That and cost.

    If the car can’t process and understand the world via cameras, it’s doomed to fail at a mass scale anyway.

    It might be a wrong stance, but it’s not that lidar is flawed.

    Tesla even uses lidar to ground truth their cameras

    Edit: just adding a late example - Waymo, Cruise, and probably everyone out there still use humans to tell the car what to do if it gets stuck. I even bet Tesla will if they ever launch a robotaxi as they need a way to somehow help the car if it gets stuck. When we see these failures with Waymo and Cruise, it’s less “is something there” and more “I don’t understand this situation”. The understanding comes from vision. Lidar just gives the something is there, but it isn’t solving their problem.