Cardo
Active Member
This seems to fit with my experience. At least I’m not imagining it!I’ve had it change from 50 to 30 to 40 but then only back up to 50 in the following 70 limit.
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This seems to fit with my experience. At least I’m not imagining it!I’ve had it change from 50 to 30 to 40 but then only back up to 50 in the following 70 limit.
Unfortunately, the available options don’t differentiate between TACC and AP, which in my experience behave completely differently in response to traffic signs.Moderator comment - recent thread merged with an earlier thread on same topic containing a poll - please feel free to vote or change your previous votes based upon recent experiences
True. The different behaviour between TACC and AP only came to light after the poll was originally posted. Its quite an old poll and probably lost some of its initial relevance so I have deleted it. The rest of the thread is still relevant.Unfortunately, the available options don’t differentiate between TACC and AP, which in my experience behave completely differently in response to traffic signs.
I find it odd that there is such an apparent variation in behaviour. Could it be a difference in hardware? Different FSD computers? As long as I’m on AP, I’ve found the speed lowering to be quite consistent. Though it only happens after going through the limit, which is not ideal.Yeah it needs to be a heck of a lot smarter. It's wierd it gets it so wrong as road signs are quite consistent in that speed limit signs are on the left of the road and facing the driver, not facing 90 degrees to the driver, or way off to the left or right.
If you have it set to "Speed Limit" rather than "Current Speed". Also note this in the manual:Is the basic autopilot supposed to automatically adjust the speed once it detects a new speed sign?
Warning
When cruising at the speed limit, there may be situations where the cruising speed may not change when the speed limit changes.
It's supposed to, but I've never seen that actually happen. Just as well given how inaccurate its sign detection is..Is the basic autopilot supposed to automatically adjust the speed once it detects a new speed sign?
Well, yes. But not if TACC was engaged separately first and only if set for speed limit. If it does change, it won’t go faster than the first set speed but will slow albeit too late. if first set speed is 70, it will slow and speed up to any limit including 70.Is the basic autopilot supposed to automatically adjust the speed once it detects a new speed sign?
Watchout for it detecting speed limits incorrectly. The gantry detection is pretty new (possible that on some new cars it may not even have that version installed yet) and when I recently closely monitored its behaviour on M25 variable speed section, which it detected the gantry speed limit (which it never did until recently), the speed limit detected (so presumably the one that TACC etc will use) would change back to 70 even though the variable speed limit was 70. Weirdly, on quite a few gantries for this to be coincidence, this happened a few yards before the gantry so it briefly incorrectly displayed 70 before almost immediately going to back to the variable speed limit. Speed control wise, it was probably too brief to make too much of a difference to physical speed, but on a few occasions, it changed back to 70 where it would have time to potentially get you into a spot of bother if no other vehicles in front to control your speed.Thank you. I am a new owner and I tried it a couple of times but it did not work. Will check again...
@NorfolkMustard I would love to know your settings. Can you please share.Changing my vote after a drive today. 60 -> 30 -> 60 all done automatically for me just now.
It looks like you've quoted an old post, but mine will do that on some roads, but not others. We have 2 way roads with a 60 limit and it works fine, if you go up a class of road to a divided carriageway (each direction has its own road with a physical barrier between), it stops working for me.@NorfolkMustard I would love to know your settings. Can you please share.
Or you can hold down the right stalk for about 1 second. I find it easier than reaching and tapping the sign on screen.If the speed doesn't automatically change you can tap the speed symbol once on the screen. Faster than using the scroll wheel.