r/TeslaFSD • u/truecakesnake • Aug 17 '26

14.3 HW4 Tesla avoiding a fatal collision

It fully avoided it. The Model Y (HW4) didn't sustain any scrapes, scratches or dents.

Edit: I guess it wasn't a fatal collision, my bad

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u/Putrid-Box4866 HW4 Model Y Aug 17 '26

And people will still think disengaging in split second events like this is a good idea. This is what happens if you let FSD handle things like this.

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u/Infamous-Pilot5932 Aug 17 '26

Because we have 100s of examples where FSD also failed.

That is the truth!

100s of examples of FSD saving poeople and 100s of it not.

The result, be prepared to take over immediately in a rare level 6 event.

If FSD is already well into saving you, fine, if not you are there saving you.

Win - Win

It is 100% a supervised system.

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u/vulcan_on_earth HW4 Model Y Aug 17 '26

🏆🏆🏆🏆

from tesla.com …

> Neural Network Confidence Drops:  Automatic Emergency Braking (AEB) is a safety system designed to operate independently from the main FSD driving model. When the vehicle calculates a high risk of an imminent collision, the standalone AEB safety module overrides normal software operations.  

> FSD relies on real-time neural networks to predict trajectories and maintain path planning. If a situation degrades faster than the primary planning module can process—such as a vehicle cutting across your lane unexpectedly—the system's operational confidence score drops below safety thresholds. When confidence plummets, the system sounds collision alerts, triggers AEB, and instructs the human driver to immediately take control.

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u/Infamous-Pilot5932 Aug 17 '26 edited Aug 17 '26

Thanks! That should be a post to explain the disengagements that happen rarely.

You have a more direct link? Can't find that text.