TMC is an independent, primarily volunteer organization that relies on ad revenue to cover its operating costs. Please consider whitelisting TMC on your ad blocker or making a Paypal contribution here: paypal.me/SupportTMC

Auto lane change concern

Discussion in 'Model X' started by Milin1609, Aug 23, 2016.

  1. Milin1609

    Milin1609 Member

    Joined:
    May 4, 2016
    Messages:
    78
    Location:
    Kingsland,GA
    I have experience a sudden lane change in my model X. When on Auto Pilot and wanted to try the lane change, as soon as I push up or down the blinker, the car would change the lane in a flash. Is it normal? Should not it take a more gentle shift to the lane I wanted to go? It is so sudden, that every time, I try this, my wife thought, I was falling to sleep.!!!!
     
  2. Derek Kessler

    Derek Kessler Member

    Joined:
    Apr 15, 2016
    Messages:
    37
    Location:
    Cincinnati
    That's what it does. It's continiously monitoring the lanes around you; it doesn't have to check that they're clear because it already knows. So as soon as you hit the signal, it goes.

    I've found that the X is more aggressive in making lane changes than the S, though. Both have a slight delay, likely just for humans being comfortable with the technology and to signal surrounding drivers, but yeah, it just goes with confidence.
     
    • Informative x 1
  3. thimel

    thimel Member

    Joined:
    Feb 27, 2015
    Messages:
    267
    On my Model S, my wife, as passenger, thinks the AP lane change is too abrupt. I don't notice any problem.
     
  4. proven

    proven Member

    Joined:
    Sep 1, 2015
    Messages:
    290
    Location:
    Raleigh, NC
    It is a little quicker than I would do manually, but it doesn't seem that sudden to me.
     
  5. BigMskiman

    BigMskiman Member

    Joined:
    Mar 14, 2016
    Messages:
    213
    Location:
    Pleasanton
    There's a soft/normal/fast steering (driving in auto-steer) setting I think, does that make a difference on how aggressive the lane change happens? I probably messed up the names.....
     
  6. Milin1609

    Milin1609 Member

    Joined:
    May 4, 2016
    Messages:
    78
    Location:
    Kingsland,GA
    I too, was in an impression that it is checking continuously the surrounding vehicle. But it is not true all the time. I had a close close, when I passed one car on my right and after overtaking about 15 ft, I command to go back in the same lane that car was. I was thinking that the car was too close, so Model X would go bit further and then lane change would happen. But as soon as, I press the blinker, the car went into the same Lane, just feets ahead of that car. It was bit scary. I wish, It gives more distance before changing the lanes in those situations. Well!! I learnt now. But hope the software update make this more refined and safer in future...
     
  7. Derek Kessler

    Derek Kessler Member

    Joined:
    Apr 15, 2016
    Messages:
    37
    Location:
    Cincinnati
    You're thinking of the human steering setting — sport vs. comfort. No option for Autopilot.
     
  8. systemcrashed

    systemcrashed Please Reboot

    Joined:
    Apr 7, 2016
    Messages:
    798
    Location:
    USA
    There are three steering modes, Comfort, Standard, and Sport. I have noticed when in Sport steering mode AP changes the lanes more abruptly,
     
  9. Drivin

    Drivin Member

    Joined:
    Feb 7, 2016
    Messages:
    964
    Location:
    CA
    AP doesn't have emotion, fear or bad judgement.
    It knows better than humans.
    It knows that there is space and time and makes the move.
    Doesn't second guess itself, doesn't take an overly conservative approach, it is: analyze, act.
     
  10. thimel

    thimel Member

    Joined:
    Feb 27, 2015
    Messages:
    267
    It only has the sonar sensors to check for vehicles in the adjacent lane. Their range is about 16 feet. So you always need to look before changing lanes.
     
    • Informative x 2
    • Like x 1
  11. aesculus

    aesculus Still Trying to Figure this All Out

    Joined:
    May 31, 2015
    Messages:
    1,954
    Location:
    Northern California
    Personally I don't like it and I also think it violates the California Driver Handbook for Safe Driving Practices
    California Driver Handbook - Safe Driving Practices
     
  12. Phil Seastrand

    Joined:
    Mar 4, 2014
    Messages:
    286
    Location:
    United States
    My Model X used to switch lanes too fast and abruptly. However, there was a firmware update a couple cycles ago that improved it to where it's about what I would do myself. The same firmware also reduced the amount of force required on the steering wheel to cancel Auto Steering. Both of these changes were much appreciated by my wife.
     
    • Informative x 1

Share This Page