How FSD behaves w/ Max Speed -- explained by Tesla software engineer

[Woodrick]

Well, having put some more miles on my FSD CT, I am convinced of the following.

Reading the signs and pulling from a speed limit database is a tug of war. On almost every drive, it gets the speed limit wrong on certain roads.

If I let it totally choose the speed, it is all over the place ... too fast and too slow.

If it is set to go by my setting, it does catch the lower speeds and slows quickly but speeding back up is a crap shoot.

It rolls up way to fast on cars stopped at a red light and uses the brake.

It wait too late to get into the correct lane for an upcoming turn.

It does signal now BEFORE it starts slowing for a turn ...

Just not ready for primetime here in VA. I am sure that roads that have more data allow it to work better.

I do NOT see any real difference between our Y and CT both with HW4.

FS

So it sounds as it drives like many drivers do. We know it doesn't drive like you, because you always drive correctly.

But the part that you seem to be missing is that it indeed seems to be doing a decent job driving by itself. It just needs a little work on speed control.

And FYI, speed control and FSD steering control are two very different things. The new speed control is only a few months old at this point.

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[Stuck4ger]

People are going to have to get used to being the passenger in self driving cars. The way I approach it is I am riding and someone else is driving, like in Uber. I don't pay attention to how fast the person is driving unless they are driving like a lunatic.

I make corrections if something goes wrong but I let it do it's thing. I just sit there and don't have to touch anything. It's way easier than driving 400 miles on the interstate myself.

It’s funny how FSD changes my tactic completely. If manual driving, I’m trying to figure out how to slowly make progress vs the traffic. If in FSD, I pretty much let it do its thing and unless it’s an obvious mistake, I don’t care.