4 ms·

Also interestingly: AEB did not trigger. It's not the first case I've seen where Tesla's Autopilot seems to override AEB[1]. Definitely confirmed behaviour to

Also interestingly: AEB did not trigger. It's not the first case I've seen where Tesla's Autopilot seems to override AEB[1]. Definitely confirmed behaviour to-date and seen as early as Q1 of this year. Any car from 2009 or later with AEB would have avoided this collision. It probably would be great if car software didn't follow the "move fast and break things" mantra. --- [1] https://www.consumerreports.org/car-safety/automatic-emergency-braking-guide/ https://www.consumerreports.org/car-safety/automatic-emergen...

Reason077 6y ago
> "Also interestingly: AEB did not trigger." Looking at the video, a bunch of dust seems to be kicked up around 1.5 seconds before the impact, suggesting hard braking. Clearly it activated too late to avoid the collision, but it certainly would have reduced the energy of the impact, and thus potential injury to occupants.
lutorm 6y ago
I don't think that's true. As far as I know, typical AEB systems are radar-based and can't determine what's on or off the road, so they rely on Doppler to pick out the car in front from the environment. If you're driving up towards a completely stationary object, it will have a very hard time detecting it.
- Reason077 6y ago
  Modern AEB systems use cameras in addition to radar, and some are actually camera-only. Besides stationary obstacles, you need a camera to detect pedestrians, cyclists, etc.
- kube-system 6y ago
  This is instantly noticeable if you drive a vehicle with radar cruise. It won't slow down if you're pointed at a stationary object.
- kalleboo 6y ago
  When we bought our used car, we were deciding between a slightly newer model and a slightly older model, and one of the differences was the older model used stereo vision for AEB and the newer model used radar. Even the car salesman said that the stereo vision worked better (as it detects stationary objects). I wonder why the move to radar. Is it cheaper?

Reason077 6y ago

> "Also interestingly: AEB did not trigger." Looking at the video, a bunch of dust seems to be kicked up around 1.5 seconds before the impact, suggesting hard braking. Clearly it activated too late to avoid the collision, but it certainly would have reduced the energy of the impact, and thus potential injury to occupants.

lutorm 6y ago

I don't think that's true. As far as I know, typical AEB systems are radar-based and can't determine what's on or off the road, so they rely on Doppler to pick out the car in front from the environment. If you're driving up towards a completely stationary object, it will have a very hard time detecting it.

Reason077 6y ago
Modern AEB systems use cameras in addition to radar, and some are actually camera-only. Besides stationary obstacles, you need a camera to detect pedestrians, cyclists, etc.
kube-system 6y ago
This is instantly noticeable if you drive a vehicle with radar cruise. It won't slow down if you're pointed at a stationary object.
kalleboo 6y ago
When we bought our used car, we were deciding between a slightly newer model and a slightly older model, and one of the differences was the older model used stereo vision for AEB and the newer model used radar. Even the car salesman said that the stereo vision worked better (as it detects stationary objects). I wonder why the move to radar. Is it cheaper?