It's probably not called speed assist but in the previous update the drive assist section of the settings had an option under adaptive cruise control to set at your current speed or the actual speed limit. If you chose the actual speed limit it would change speed based upon the highway signs. There was also an option for a negative or positive offset. So if you set the offset to +5 for example it would have you going 80mph when the speed limit was 75mph. When the speed drops to 65mph coming into a town it would automatically set you at 70mph. The cameras pick up the speed limit signs. Not sure if the NAV data plays any part.
Oh. I never tried using that, but it sounds neat.
Works great on the Rivian. It was dangerous on my Lightning until the latest update. The Lightning allowed it on secondary highways and it would pick up the speeds of Interstates when you crossed one under a bridge/exit ramp. So you could have adaptive set at 45mph and it would aggressively speed you to the speed limit or much faster depending on offset.
I could imagine driving along at 45 and thinking the new speed limit is 70, being pretty shocking.
That doesn’t surprise me. The last Ford product I had was a 2020 explorer ST and I had it less than 6 months before trading it in as the software was unusable.
