7 ms·

It gets worse, if your Tesla is following a car in front of you, and they switch lanes, but you can’t switch lanes because another car is coming from behind in

It gets worse, if your Tesla is following a car in front of you, and they switch lanes, but you can’t switch lanes because another car is coming from behind in that lane, the Autopilot will switch nonetheless. This almost killed a tester from the German federal motor vehicle approval agency. Their overall report is devastating, and shows the Tesla autopilot is little more than a glorified cruise control, marketed in a very deceptive way.

eclipxe 9y ago
This is not true at all. Tesla's do not use the car in front to switch lanes.
- kuschku 9y ago
  It depends on what mode you set it to, but under some circumstances, it does.
  - eclipxe 9y ago
    No, it does not use the car in front of you to switch lanes.
  - pilif 9y ago
    What would these circumstances be? I have never seen my car do this.
    - kuschku 9y ago
      When the Tesla can not reliably detect lanes (for example, due to too dense traffic), it starts to just follow whatever vehicle is in front, and determines the lane from that vehicles movement. This can lead to major issues, as mentioned.
      - pilif 9y ago
        When it cannot reliably detect lanes, it disengages autosteering while making a very obvious warning sound that you cannot possibly miss.
        kuschku 9y ago
        Not always, in highway traffic the lane markings are frequently too obscured to be readable by the camera, but if it believes that the cars in front are driving in the lanes, it just uses them. Otherwise autopilot wouldn't work at all on highways.
cr0sh 9y ago
I'm not sure what to say when the code I recently turned in (and passed) for the path planning project of term 3 in Udacity's Self-Driving Car Engineer works better at changing lanes than Tesla's system: https://github.com/andrew-ayers/udacity-sdc/blob/master/Term%203/06%20-%20Project%20-%20Path%20Planning/CarND-Path-Planning-Project-Writeup.md https://github.com/andrew-ayers/udacity-sdc/blob/master/Term... Then again, it does have a failure mode where occasionally, for some reason, it will direct the car to change lanes into the path of a much faster moving vehicle in the lane being changed to. Most of this is because it only runs the behavior planner every second or so in the simulation, and probably does get everything perfectly correct in the prediction part (I honestly am not sure where the problem lies, though).
- kuschku 9y ago
  The problem Tesla has is that their system only has ~ 40 meters visibility to back or front. That means if you're on the Autobahn, at say 130km/h in the right lane, and a Porsche is coming from behind at 300km/h, the Tesla will not be able to see it, and consider the lane free.
  - boznz 9y ago
    Remind me never to drive on a German Autobahn.
    - kuschku 9y ago
      It’s quite interesting, because obviously an entirely different class of issues becomes apparent when the speed between two lanes on a highway can differ by a factor of 4. This is what you get when the speed limit actually is "unlimited".

eclipxe 9y ago

This is not true at all. Tesla's do not use the car in front to switch lanes.

kuschku 9y ago
It depends on what mode you set it to, but under some circumstances, it does.
- eclipxe 9y ago
  No, it does not use the car in front of you to switch lanes.
- pilif 9y ago
  What would these circumstances be? I have never seen my car do this.
  - kuschku 9y ago
    When the Tesla can not reliably detect lanes (for example, due to too dense traffic), it starts to just follow whatever vehicle is in front, and determines the lane from that vehicles movement. This can lead to major issues, as mentioned.
    - pilif 9y ago
      When it cannot reliably detect lanes, it disengages autosteering while making a very obvious warning sound that you cannot possibly miss.
      - kuschku 9y ago
        Not always, in highway traffic the lane markings are frequently too obscured to be readable by the camera, but if it believes that the cars in front are driving in the lanes, it just uses them. Otherwise autopilot wouldn't work at all on highways.

cr0sh 9y ago

I'm not sure what to say when the code I recently turned in (and passed) for the path planning project of term 3 in Udacity's Self-Driving Car Engineer works better at changing lanes than Tesla's system: https://github.com/andrew-ayers/udacity-sdc/blob/master/Term%203/06%20-%20Project%20-%20Path%20Planning/CarND-Path-Planning-Project-Writeup.md https://github.com/andrew-ayers/udacity-sdc/blob/master/Term... Then again, it does have a failure mode where occasionally, for some reason, it will direct the car to change lanes into the path of a much faster moving vehicle in the lane being changed to. Most of this is because it only runs the behavior planner every second or so in the simulation, and probably does get everything perfectly correct in the prediction part (I honestly am not sure where the problem lies, though).

kuschku 9y ago
The problem Tesla has is that their system only has ~ 40 meters visibility to back or front. That means if you're on the Autobahn, at say 130km/h in the right lane, and a Porsche is coming from behind at 300km/h, the Tesla will not be able to see it, and consider the lane free.
- boznz 9y ago
  Remind me never to drive on a German Autobahn.
  - kuschku 9y ago
    It’s quite interesting, because obviously an entirely different class of issues becomes apparent when the speed between two lanes on a highway can differ by a factor of 4. This is what you get when the speed limit actually is "unlimited".