[lostsock]

That video is from 2020, but Tesla didn't remove radar until 2021. Meaning that the crash occurred with radar still active, which I feel just backs up what Karpathy was saying.

[petilon]

Well, the car may have had radar hardware but there are questions as to whether the software was using it:

https://www.nytimes.com/2021/07/05/business/tesla-autopilot-...

Excerpt:

Mr. Rajkumar of Carnegie Mellon, who reviewed the video and data at the request of The Times, said Autopilot might have failed to brake for the Explorer because the Tesla’s cameras were facing the sun or were confused by the truck ahead of the Explorer. The Tesla was also equipped with a radar sensor, but it appears not to have helped.

“A radar would have detected the pickup truck, and it would have prevented the collision,” Mr. Rajkumar said in an email. “So the radar outputs were likely not being used.”

https://www.nytimes.com/2021/12/06/technology/tesla-autopilo...

Excerpt:

Tesla later said that during the crash, Autopilot’s camera could not distinguish between the white truck and the bright sky. Tesla has never publicly explained why the radar did not prevent the accident.

[lostsock]

Because radar is not good at picking up stationary objects and/or has to filter them out:

https://www.wired.com/story/tesla-autopilot-why-crash-radar/

[dmix]

> Autopilot’s camera could not distinguish between the white truck and the bright sky.

Is this a hard limitation to vision systems? Or are they saying in that particular early version it couldn't?

(And yes I understand LIDAR wouldnt be limited by the color and would see the objects)