Knightshade
Well-Known Member
As far as TACC goes, difference is every other car lets you use normal cruise control if you don’t want to deal with the phantom breaking etc. Tesla doesn’t.
This is actually a really interesting question from a user/safety perspective.
One of the things CR (and others) raise as a major issue with driver aids is a problem called "mode confusion" where the driver thinks the car is in one mode of automation and it's in a different one, which can lead to a crash.
For example in a car where you can flip between TACC and "dumb" cruise if you think you're in TACC, but you're not, you might fail to brake in time to prevent an accident because you expected the car to do it.
I know everyone who wants it insists THEY wouldn't have that problem- but it IS a real thing that's been the subject of a number of studies.... Tesla even has their own issues with it in that some of the ways of dropping out of AP leave TACC on and some do not.