Issue: AP Tracking Vehicles in Adjacent Lanes

[rohan_aus]

Hey guys,

Anyone else having this issue the past 2 or 3 software versions?

AP is tracking vehicles in adjacent lanes and slowing, sometimes aggressively, to match their speed. AP has even tracked a vehicle in an adjacent lane that was behind me and slammed the brakes on. This is happening dozens of times on my recent trips and means I have to hover my foot over the accelerator the entire time to stop it phantom braking.

See image below of the car tracking two cars in the left lane that are clearly in their own marked lane. Car would not pass them and matched their speed (105), I had to override by pressing the accelerator.

 

[RoBoRaT]

Yes. I commute same Freeway and I am always on guard with the same places where car on adjacent lane is yawed towards your lane - then my car will abruptly slow down to avoid what it think is a likely collision.

This is my usual scenario: I'm in HOV lane next to a merge lane (on my right) without any merging car, but Tesla is tracking a car (blackened in screen) the next lane over (on my right still; fast lane on freeway where cars are going 80+ mph and I'm in HOV lane at 75sh mph).

So I look out for (blackened) cars and at the ready to intervene, or just move away on the next lane if feasible.

 

[TomT]

Yep, I've seen this behavior a number of times... I seem to remember a release note some time back where Tesla described it as a new feature...

 

[Knightshade]

Yeah this was added late 2019

Tesla Autopilot improves with 'Adaptive Lane Speed' feature for cars in adjacent lanes.

 

[lUtriaNt]

i noticed this behavior the other day as well. i immediately looked for those reverse arrows you see when the screen shows you the cars are moving slower than you.. dont recall seeing them,, just the car reducing speed.

 

[ElectricIAC]

Hey guys,

Anyone else having this issue the past 2 or 3 software versions?

AP is tracking vehicles in adjacent lanes and slowing, sometimes aggressively, to match their speed. AP has even tracked a vehicle in an adjacent lane that was behind me and slammed the brakes on. This is happening dozens of times on my recent trips and means I have to hover my foot over the accelerator the entire time to stop it phantom braking.

See image below of the car tracking two cars in the left lane that are clearly in their own marked lane. Car would not pass them and matched their speed (105), I had to override by pressing the accelerator.

View attachment 602288

Yes. Hate it.

 

[SlimJim]

It is indeed almost as annoying as slowing down at the freeway exit when I am not exiting.

 

[KenC]

Weird. It's slowing to match the speed of slower left lanes? Does the car think it's in the US?

 

[rohan_aus]

Weird. It's slowing to match the speed of slower left lanes? Does the car think it's in the US?

I thought maybe that was the case earlier on, but it does it on the left and right lanes, no pattern to it.

 

[Kevy Baby]

Yeah this was added late 2019

Tesla Autopilot improves with 'Adaptive Lane Speed' feature for cars in adjacent lanes.

"It's not a bug, it's a feature."

 

[ElectricIAC]

"It's not a bug, it's a feature."

One of those. It needs a toggle.

 

[RoBoRaT]

Yeah this was added late 2019

Tesla Autopilot improves with 'Adaptive Lane Speed' feature for cars in adjacent lanes.

That is not the same as what the OP or I was describing.

The Adjacent Lane Speed adjustment feature highlights the slower lane with arrows and the vehicles in grey, and will slowly reduce your speed, where as this abrupt slowing described by the OP tracks the other vehicle in adjacent lane highlighted as black.