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Autopilot restrictions gone

Discussion in 'Model S' started by Hota, Aug 27, 2016.

  1. Hota

    Hota Member

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    I just realized a few days ago that autopilot is no longer limited to 5 mph over the posted speed limit on non-divided highways.

    I've been playing with it and there's no limit at what I can set it to regardless of road type.

    Anyone else noticw this on their vehicles? I can't say for sure it was part of the latest firmware upgrade since I just noticed a week ago.
     
  2. Pale_Rider

    Pale_Rider Member

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    Mine prevented me today from doing that when it saw an inactive school zone speed limit sign...

    Chris
     
  3. Airhawker

    Airhawker Member

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    I don't think mine ever had a limit. May build, got it in July.
     
  4. David99

    David99 Active Member

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    What is the minimum speed to engage AP?
     
  5. rypalmer

    rypalmer Member

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    Mine was still limited tonight to 10km/h over the limit on a non divided road.
     
  6. docherf

    docherf Member

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    I can engage AP while stopped behind someone in traffic if you want. That's nice at lights.

    When not behind a car, my AP won't engage until 18mph. Not sure why this is the number they picked?
     
  7. Patrick W

    Patrick W Member

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    I'm still limited on v. 2.32.23. What version are you on?
     
  8. Patrick W

    Patrick W Member

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    Yes, I've noticed a few odd numbers like that. But not so suspiciously the numbers always seem to be Americanized conversions from rational metric numbers.
     
  9. PaulusdB

    PaulusdB Mayor Gnomus Vintage Limb

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    @docherf, 18 miles converts to 30 kilometers. (The internal calculations of the car are in kilometers.)
    So they picked a nice round number that happens to be a common speed limit in European suburbs and near schools.
     
    • Like x 1
  10. GSP

    GSP Member

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    I thought it might be a nice even kph number, but 18 mph = 29 kph, not a nice even 30.

    GSP
     
  11. NullException

    NullException Member

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    depends which way you do the conversion, due to rounding.

    going from miles to km: 18 mph = 28.97 kph
    going from km to miles: 30 kph = 18.64 mph

    If the car is allowing AP at 30kph, then it's going to appear as 18 mph or 19 mph on the speedometer, depending on how the car rounds the figure displayed.
     
  12. chriSharek

    chriSharek Member

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    Man, you guys are a bunch of nerds! :)
     
    • Funny x 3
  13. Saghost

    Saghost Active Member

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    I think it is related to the algorithm for recognizing lane lines.

    I don't know if you've noticed, but below that speed, mine is always in "follow the leader" mode (car ahead marked blue, the Tesla follows the other car wherever it goes) while above that speed it is usually following lane lines (lane marked blue on one or both sides, car ahead marked white,) though occasionally it loses the lines and reverts to following cars.

    I was actually amused by this transition - a couple times I've been places where it had to bounce between the two modes - and the car in front was ~6" to the left of center in the lane. AP centered itself behind the car, then corrected to be centered in the lane, then back to centered on the car, etc.
     
  14. Todd Burch

    Todd Burch Electron Pilot

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    It switches at low speeds because following distance is lower and the camera doesn't have a good view of the lane markings (what with the big car in your face and all).
     
  15. Hota

    Hota Member

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    That's the version I'm on!
     
  16. CHG-ON

    CHG-ON Still in love after all these miles

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    I am still limited to 5 mph over on undivided roads on 2.32.23.
     
  17. Hota

    Hota Member

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    Okay, playing with it more today, I found an undivided road that limited my autopilot to 5 mph over. I guess many of the undivided roads aren't limited for some reason - even with one lane each direction.
     

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