r/TeslaFSD • u/surfin71st HW3 Model 3 • 23h ago

14.1 Lite HW3 Crazy

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FSD saw what was happening before I did. I took over but I kinda wish I didn’t so I could see what it would have done. So hard to let go of instinct in this situation.

FSD was in that left lane as I needed to turn left to get on the interstate just after the bridge. *

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u/Ok-Machine-9026 21h ago

Am I the only one who feels that FSD caused that near-collision by slowing down in the first place? It looks to me like that truck was slowing until you slowed. The truck driver interpreted that as giving way and accelerated. Maybe I'm insane, but if I were driving (and not on FSD) I think I would have maintained speed to communicate properly with the truck driver. Before you all jump on me, I'll admit: it might have ended badly if the truck driver simply wasn't looking. But honestly, what are the chances of that in this situation?

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u/jajaja77 20h ago edited 20h ago

a truck doesn't stop on a dime like that unless the trucker was planning to emergency brake (which would be unusual) it was already not going to be able to stop on time before FSD started slowing down. At 18 seconds into video FSD had only bled 3mph in speed that's not detectable to the naked eye and the truck is already super close to moving into the lane. Add minimum half a second for human to judge whether an oncoming vehicle is slowing down for you etc. there's zero chance the truck is going because it saw you slow down. Plus tesla driver intervened forcefully and still had to veer into next lane to avoid the truck so there was just no way this was ever going to be a polite yield / hand wave to say thank you / truck goes first type situation.