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FSD 13.2.9 - Turned Left Into Oncoming Traffic

jameskk

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This happened yesterday while coming home from golfing at Bear Dance. Normal county highway, came to a complete stop at the stop sign. Blinker on to turn left, Cybertruck decided to turn sharp into the left lane so double yellows were on the right side of the truck. No oncoming traffic so I let it go for about 10 seconds to see if it recognized what it had done, and it was just was peachy keen driving in the left lane of the two lane highway with the double yellow on the right side. No red hands to take over or anything. Disengaged and reported what had happened but had 3 other passengers with me and boy did they rib me the entire ride home LOL. ¯\_(ツ)_/¯
mine does that occasionally, and frankly that is the only issue that I have with FSD, albeit not a good issue to have. I have identified at least 1 road this is does this on about 20% of the time.
 

DEAKBS

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This happened yesterday while coming home from golfing at Bear Dance. Normal county highway, came to a complete stop at the stop sign. Blinker on to turn left, Cybertruck decided to turn sharp into the left lane so double yellows were on the right side of the truck. No oncoming traffic so I let it go for about 10 seconds to see if it recognized what it had done, and it was just was peachy keen driving in the left lane of the two lane highway with the double yellow on the right side. No red hands to take over or anything. Disengaged and reported what had happened but had 3 other passengers with me and boy did they rib me the entire ride home LOL. ¯\_(ツ)_/¯
This happened to me once so far as well just a few days ago. Fortunately there were no cars in the oncoming lane and I deactivated and reported it in the voice log.
 

PungoteagueDave

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p

Press and start talking, you can see the count down timer on the recording.
Okay, that's different than using voice commands, where you just tap the mic button and it listens
 

UberNoob

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Yup happens to me at T intersections, figure it’s just the AI trying to off me / itself if one wasn’t paying attention.
Who’s the guy training this thing like watch this guys I’m a make it ride the yellows. And this 4 wheel SBW is so tight… lol
 

Brian Egan

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Happened to me for the first time yesterday. Left turn in a neighborhood without any dividing lines. CT stayed over to the left side of the street until the next right turn. Also experience sudden braking with skid marks on road.
Since last update, I have a sense FSD has got a little worse.
 

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This happened yesterday while coming home from golfing at Bear Dance. Normal county highway, came to a complete stop at the stop sign. Blinker on to turn left, Cybertruck decided to turn sharp into the left lane so double yellows were on the right side of the truck. No oncoming traffic so I let it go for about 10 seconds to see if it recognized what it had done, and it was just was peachy keen driving in the left lane of the two lane highway with the double yellow on the right side. No red hands to take over or anything. Disengaged and reported what had happened but had 3 other passengers with me and boy did they rib me the entire ride home LOL. ¯\_(ツ)_/¯

Happened to me today, scared the hell out of me!
 

cybertrout

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Has happened 4 times to me within the past month. It’s a problem.
 

flamaest

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Same, it's been that way for a while. Happened to me again the other day driving to LA.
 

SSonnentag

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My CT did the same thing last weekend. It turned left and into the turn lane instead of keeping to the right of the turn lane and the double-yellow lines.
 

Freeseframe

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I too have a few intersections it regularly misreads (and has for multiple FSD dot releases) and can reproduce. Normally it self corrects in 100-200 feet but when traffic is present I'll take over.

I also had a very bizarre incident last week on a rural 2 lane highway (no traffic). As it was approaching an upcoming left turn it crossed the double yellow to get into the left lane (opposing traffic lane) and turned left into the left lane on the intersecting road and had no desire to get in the right lane. The bizarre part was the pre-left turn behavior which I admit occurs commonly by human drivers in my area on rural roads at highway speeds if no oncoming traffic is present to avoid getting rear ended so may be getting bad training data somewhere.
 

flcybr

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Happened to me this morning, t interesection took left into oncoming traffic here in Florida, lanes are clearly marked . Was perfect until this am ?
luckily I took over ass soon as it turned onto the wrong side of the road
 

N800AN

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This curve is long enough where most cars take it 'at speed' (30-35mph). Travelling north-to-east, 13.2.9 handles it perfectly fine. West-to-south has always been a struggle for FSD on CT. Historically FSD will cross the lane divider briefly at the apex of the curve, which is super scary coming around a blind left curve with oncoming traffic.

13.2.9 however will completely blow past the double yellow lane divider, fully join the oncoming traffic lane, and stay there. Which is so crazy to me.

Tesla Roadster 2nd gen FSD 13.2.9 - Turned Left Into Oncoming Traffic Screenshot 2025-06-11 at 07.07.32


 
Last edited:

Nephilim

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I've had this happen a few times. Sometimes it will move back into the correct lane of you can safely leave it driving on on the wrong side of the road for 10-20 seconds. Sometimes not.

13.2.9 did this to me just this week, taking a left and diving directly into oncoming traffic about 150 feet ahead. I had to immediately take over. Broad daylight,

It's not a common thing, but they really do need to fix this.
 
 
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