I'm shocked (literally) to see there are production vehicles with steer-by-wire. Couple that with OTA updates and you have a vehicle I'd refuse to ride in, much less purchase.
And then these manufacturers wonder why people just want them to have a dumb head unit with carplay/android auto. Because they absolutely suck at software and have shown no desire to improve outside of charging people subscriptions for hardware features that are already in the car.
This isn't exceptional design on the part of Tesla. It is absolutely baseline common sense. I can't believe it isn't the defacto rule. I guess it might need to be regulated because apparently some companies are THAT untrustworthy.
All regulations are written in blood.
It really is "The Homer" of cars isn't it.
One isn't the same as the other - the regulatory regime/testing and redundancies on a plane are completely different to a car and not inconsequentially the person operating the plane is rather better trained on what to do when things go "oopsie" than the person loose behind the wheel of the average car.
Also aircraft are serviced in a way far beyond what cars are.
Thinking of this somehow reminded me of the most harrowing aircraft disaster that I've ever read about: https://en.wikipedia.org/wiki/United_Airlines_Flight_232
It's both tragic because half of the passengers were killed but also miraculous that anyone survived at all.
Completely unlike the safety standards for cars.
Also people say "oh what if fly-by-wire fails" well what if traditional hydraulic controls fail, which has happened plenty in the history of commercial aviation
Everything can and will fail at some point
No redundancy is redundancy enough in some %0.xx of cases. You can always reduce the number, but never make it 0
Not for cars tho. Cars can be expected to be as reliable as the average windows PC unless there are regulations made and accountability assigned
https://corecursive.com/066-sqlite-with-richard-hipp/#testin...
"Richard Hipp: Getting that last 5% is really, really hard and it took about a year for me to get there, but once we got to that point, we stopped getting bug reports from Android.
"Richard Hipp: Yes, so we’ll do billions of tests."
Most planes have been fly-by-wire for decades and aren't regularly falling out of the sky
https://admiralcloudberg.medium.com/fields-of-fortune-the-cr...
The (as of a this year) second-most popular airliner, the Boeing 737, has fully mechanical controls for the ailerons and elevator (with hydraulic boosting). Elevator trim is also mechanical.
The pilot needs to be built like a gorilla to fly it, but primary flight controls continue work, even with a total failure of all electrical and hydraulic systems.
Sioux City Approach: "United Two Thirty-Two Heavy, the wind's currently three six zero at one one; three sixty at eleven. You're cleared to land on any runway."
Haynes: "[laughter] Roger. [laughter] You want to be particular and make it a runway, huh?"
And here's a truly excellent long form article on the crash by the always excellent Admiral Cloudberg: https://admiralcloudberg.medium.com/fields-of-fortune-the-cr...
[1] J. C. Knight and N. G. Leveson, “An experimental evaluation of the assumption of independence in multiversion programming,” IIEEE Trans. Software Eng., vol. SE-12, no. 1, pp. 96–109, Jan. 1986, doi: 10.1109/TSE.1986.6312924.
Indeed, the risk is far too large to ignore.
I will never own a car that has steer-by-wire or braking-by-wire. Those are two controls that absolutely must have a mechanical linkage that cannot be altered by software. Other things I can handle, but if all goes haywire, I must be able to steer and brake.
Car manufacturers have just never bothered to do it right. If they cheapened as much on steering bars, it would break all the time too.
That said, OTA updates for basic functionality is an immediate blocker. Updates are by definition not mature technology.
Honda: "all Honda models use Drive-by-Wire technology" (for the accelerator pedal).
https://www.hondainfocenter.com/Shared-Technologies/Engines/...
Subaru's used it in a bunch of vehicles for decades: https://www.ultimatesubaru.org/forum/topic/70486-what-year-d...
Most new Toyotas, Ford, etc.
While throttle/acceleration isn't steering, if you're uncomfortable with the underlying concept of a potentiometer and a microcontroller and a small motor on the other end being used to control a vehicle and consider it unproven technology, then you'd need to avoid most new cars in order to be logically consistent.
Its all controlled by electronics now.
Or are you just posting just for engagement?
If you let the steering wheel go it would spring back to the middle even with the car at a standstill because of the resistance cam.
If it lost hydraulic pressure while you were driving there was still generally enough in the system to allow you to pull over safely, and you could drive for much longer distances if you could cope with about a quarter of a turn of "play" in the steering wheel. With no pressure at all, turning the steering wheel would move the shuttle valve in the steering controller until it bottomed out and then the linkage would just turn the pinion on the steering rack, which was normally used for servo feedback. Uncomfortable, but acceptable for "get off the road" situations.
The hydraulic system also worked the self-levelling suspension, the fully-powered braking system (similar to the WABCO systems on a lot of more modern vehicles), and on some manual gearbox models the clutch.
Not really "drive by wire", because it's not electronic, but it really is a system where the steering rack could be fully decoupled from the steering wheel.
"Steer by wire" means there is nothing but copper signal wires between your steering wheel and the front wheels. Your steering wheel is essentially a video game controller.
This has nothing to do with the car's mode of propulsion though, and both EVs and ICE cars can have steer by wire controls. So far, it's only the cybertruck that has this paradigm, all other EV's all have normal power steering.
For normal power steering systems there are two types: hydraulic and electric. Both types have a solid steel shaft between your steering wheel and the front wheels. You can remove the engine/motor completely, and you'll still be able to steer the car. The hydraulic or electric motor merely helps you turn the wheel, nothing more. Hydraulic is being phased out for electric in both EVs and ICE vehicles.
For whatever reason, manufacturers aren't trying to make fully autonomous ICE vehicles.