Speed Limit in Cluster Always Wrong

[Paleus]

Is there a way to turn off the speed limit display in the cluster? Mine is wrong 80% of the time and it is just annoying to look at.

I have a 2021 Lariat, no adaptive cruise or blue cruise.

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[Larrymoe]

How do you know it's wrong?

 

[Paleus]

How do you know it's wrong?

Because the number on the cluster doesn't match the number on the signs on the side of the road.

 

[Larrymoe]

Because the number on the cluster doesn't match the number on the signs on the side of the road.

And you know those are right because?

 

[Paleus]

And you know those are right because?

The state police typically reference those signs when asking why you were going so fast...

 

[Larrymoe]

The state police typically reference those signs when asking why you were going so fast...

What state is that?

 

[coadr]

I think it uses a fusion of data from the navigation map and real world so that would explain why it's wrong. Betting the nav system is out of date since that data is all sourced externally!

 

[Paleus]

I think it uses a fusion of data from the navigation map and real world so that would explain why it's wrong. Betting the nav system is out of date since that data is all sourced externally!

I think that is the problem and I am not paying to update my nav. Just want to disable it.

 

[Henfield]

It is more dependent on whatever data exists out there in the Ford Nav world than anything on the side of the road. Persistent errors on highways are often caused by long gone 50mph road work not being reinstate back to original.

Yes you can shut it off, https://www.f150gen14.com/forum/threads/speed-limit-assist-is-annoying.11095/

 

[discothan]

I found that the speed limit data and speed limit sign recognition from cameras are inaccurate (especially in construction zones). I turned off speed limit assist option for adaptive cruise as well as started to ignore the cluster and used the visuals/knowledge of the actual speed limits.

 

[Larrymoe]

Ha! I totally misread your original post and having reread this while not trying to do other things, I realize I made myself out to look even dumber than normal.

Disregard any of my posts here. Carry on.

 

[HammaMan]

The database is full of old/outdated/misinformation. It's basically using the last DB-contained-change-of-speed. The DB contains entries for changes in speed whereas the camera is always looking at signs for changes vs currently "known" speed (aka the speed limit the truck currently believes to be accurate regardless of source, shown on the IPC). The camera's sign recognition overrides the current speed if it's different from what the truck believes the speed to be.

I've submitted changes to here.com DB and at some point they seem to have stuck. It's been over a year since I did that. One instance where the DB is actually right, there's a spot where the limit goes +5 (50 to 55) but a car took out the sign a year ago and the truck correctly changes from 50 to 55 where the sign used to be. 99% of the time the DB is wrong though, most often associated with previous construction work. Not sure why in the hell a company would record a temporary construction speed limit as 'the speed' for a road if their goal is accurate data. This could have been coded out of the DB fairly easy but it seems long term accuracy wasn't the goal.

 

[Paleus]

It is more dependent on whatever data exists out there in the Ford Nav world than anything on the side of the road. Persistent errors on highways are often caused by long gone 50mph road work not being reinstate back to original.

Yes you can shut it off, https://www.f150gen14.com/forum/threads/speed-limit-assist-is-annoying.11095/

I don't have adaptive cruise or bluecruise, so no options in the menu for cruise control that I can see to turn it off.

 

[Paleus]

The database is full of old/outdated/misinformation. It's basically using the last DB-contained-change-of-speed. The DB contains entries for changes in speed whereas the camera is always looking at signs for changes vs currently "known" speed (aka the speed limit the truck currently believes to be accurate regardless of source, shown on the IPC). The camera's sign recognition overrides the current speed if it's different from what the truck believes the speed to be.

I've submitted changes to here.com DB and at some point they seem to have stuck. It's been over a year since I did that. One instance where the DB is actually right, there's a spot where the limit goes +5 (50 to 55) but a car took out the sign a year ago and the truck correctly changes from 50 to 55 where the sign used to be. 99% of the time the DB is wrong though, most often associated with previous construction work. Not sure why in the hell a company would record a temporary construction speed limit as 'the speed' for a road if their goal is accurate data. This could have been coded out of the DB fairly easy but it seems long term accuracy wasn't the goal.

I don't think I have the camera to see the signs. I have driven past plenty of clearly visible speed limit signs with the wrong speed persisting on my dash.

 

[SomebodyInGNV]

It also reacts to speed limit signs. It misreads speed limits for off-ramps even if I'm not leaving the highway. The result is inappropriately dropping from 65-70 to 20 without warning to me or the person behind me

I disabled it for that reason and other similar experiences.

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