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This is just beyond me. How did the radars not see the front portion of the truck, the front wheels, the underbody of the container isn't that high to let the e

This is just beyond me. How did the radars not see the front portion of the truck, the front wheels, the underbody of the container isn't that high to let the entire car go through?

Svip 10y ago
This is what I was wondering too. Which is also why I predict (although basically speculating!) that an alert driver would have noticed the actual lorry itself and made the assumption that it carried a trailer, and at the very least slowed down.
- farhanhubble 10y ago
  Poor software engineering, maybe. It'd be interesting to look at the picture that the radar painted for itself.
fnump 10y ago
Musk: "Radar tunes out what looks like an overhead road sign to avoid false braking events". So there's that. https://twitter.com/elonmusk/status/748625979271045121 https://twitter.com/elonmusk/status/748625979271045121
phire 10y ago
It's a narrow beam radar (about 200m range) which checks the current lane is clear, it probably assumed the other parts of the truck were some obstacle on the side of the road (or in another lane) I'm not even sure the radar has a height dimension, I suspect they just focused it at bumper height to catch most cars. The car also has a single camera in the front to see the lane markers, and a short range ultrasonic system to give it a 360 degree view, out to a few meters. For the amount of confidence drivers are putting into the system, Tesla don't have anywhere enough sensor data.
- gambiting 10y ago
  It was explained elsewhere that the radar does not scan "up" to avoid collision warning for overpasses. Actually I remember reading a reddit thread months ago saying that a Tesla in Autopilot could, theoretically, hit a steel beam that was sticking out onto the road at around the roof height, because the radar wouldn't see it. And I absolutely agree with your last sentence - these cars need more sensors.

This is just beyond me. How did the radars not see the front portion of the truck, the front wheels, the underbody of the container isn't that high to let the entire car go through?

Svip 10y ago

This is what I was wondering too. Which is also why I predict (although basically speculating!) that an alert driver would have noticed the actual lorry itself and made the assumption that it carried a trailer, and at the very least slowed down.

farhanhubble 10y ago
Poor software engineering, maybe. It'd be interesting to look at the picture that the radar painted for itself.

fnump 10y ago

Musk: "Radar tunes out what looks like an overhead road sign to avoid false braking events". So there's that. https://twitter.com/elonmusk/status/748625979271045121 https://twitter.com/elonmusk/status/748625979271045121

phire 10y ago

It's a narrow beam radar (about 200m range) which checks the current lane is clear, it probably assumed the other parts of the truck were some obstacle on the side of the road (or in another lane) I'm not even sure the radar has a height dimension, I suspect they just focused it at bumper height to catch most cars. The car also has a single camera in the front to see the lane markers, and a short range ultrasonic system to give it a 360 degree view, out to a few meters. For the amount of confidence drivers are putting into the system, Tesla don't have anywhere enough sensor data.

gambiting 10y ago
It was explained elsewhere that the radar does not scan "up" to avoid collision warning for overpasses. Actually I remember reading a reddit thread months ago saying that a Tesla in Autopilot could, theoretically, hit a steel beam that was sticking out onto the road at around the roof height, because the radar wouldn't see it. And I absolutely agree with your last sentence - these cars need more sensors.