2 ms·

I get the impression that it kind of comprehends the world as a horizontal plane. It’s focused on objects on the surface and isn’t looking for hazards coming fr

• Retric 4mo ago
  At minimum it needs to pay attention to railroad crossing bars and bridges. They show a 2D representation to the driver because that’s good enough for drivers, but I wouldn’t assume that represents how the system operates internally at every stage. Even navigating requires the concept of bridges crossing roads without intersecting them.
  • Reason077 4mo ago
    It is indeed known to have issues at railway crossings: https://news.ycombinator.com/item?id=47783427 https://news.ycombinator.com/item?id=47783427 AFAIK, there's no issue with bridges that cross roads, however. It will just ignore a road that's above or below the one you're travelling on that doesn't intersect with yours. Just like a human driver would do.
    • Retric 4mo ago
      > It is indeed known to have issues at railway crossings: At scale you can “have issues” and still work 99% of the time. If it’s completely incapable of handling railroad crossings that’s relatively easy to verify. > AFAIK, there's no issue with bridges that cross roads, however. It will just ignore a road that's above or below the one you're travelling on that doesn't intersect with yours. Just like a human driver would do. As a user of the system that’s worked it all out it’s not an issue for you, but getting that behavior from raw sensor data is non trivial.