[selectout]

A big part of being allowed to take your hands off the wheel is probably "how do I detect the hands are on the wheel?". In current S/X with no interior camera the way autopilot works is you have to "yank" the wheel every now and then to prove you have your hands on. Requiring constant "yanking" wouldn't work, and there are often long stretches of roads on highways (where Autopilot is meant to work) that wouldn't require any movement of the wheel at all so they wouldn't know the difference between hands on or off unless you "yanked" it.

[brandon272]

Every time I learn about how these cars are handling things I end up disappointed and concerned because the actual implementation is way less impressive and seemingly less foolproof than I - and I'm sure many other people - are assuming they are.

I would have never guessed "hands on wheel" is detected only if the driver yanks the wheel. I figured it was camera based or that the wheel had capacitive sensors.

[makomk]

Now compare this with Tesla's PR statement which makes it sound as though they have proof that the guy who was fatally steered into a barrier by their Autopilot had taken his hands off the wheel. They resort to this kind of sleazy, dishonest misrepresentation every time their software screws up.

[freerobby]

The steering wheel detects torque. Generally if your hands are on the wheel, they exert enough torque through natural movements for the vehicle to detect them. In rare cases, where a road is straight and a driver's hands are perfectly balanced, the car will flash a warning, in effect telling the driver to provide some brief feedback. The slightest of forces on the wheel will quell the warning (much less force than is required to move the steering wheel).

[selectout]

Are you talking about vehicles in general or Teslas? I've had a Model X for about a year now and can say that just having hands on the wheel definitely does not generate enough torque to deter the warnings on Autopilot, it definitely requires a "yank".

[freerobby]

Teslas. Maybe something changed but on my 2015 Model S I've never had to physically move the wheel in the slightest, just apply a little bit of pressure.

[theluketaylor]

Cadillac Super Cruise is far superior to Tesla's autopilot and is a true Level 3 system. It does active attention monitoring of the kind you're expecting and uses GPS fences to only activate where GM has detailed maps.

Still very new only only on a single model so far, but it's at least the right direction.

https://www.youtube.com/watch?v=VTuiB6Ob7Jc

[jijojv]

I also don't hold the wheel hard enough, I always get the jiggle the wheel warning ~ 1 min as that's the only way for them to detect. Sometimes if you're so focused on watching cars in other lanes it's easy to miss the slight flashing warning that it starts with. So there is no evidence Walter wasn't paying attention in the past just based on that as most AP users get that.