Phantom hard braking on autopilot

[Stach]

I wonder if the phantom braking was caused by the speed limit sign which is also at the 47 second mark.

I misspoke before, I was only on TACC (not AP0 and I don't have the latest firmware yet, so mine can't even read that sign.

 

[W&B2017X]

Most of the phantom breaking I've experienced is when I'm approaching an overpass.

This is where it happens to me as well. Specifically one particular overpass and I have not experienced it anywhere else. I thought maybe it is because the are doing a huge I-4 expansion and have widened it so much that the GPS thinks its on the old exit ramp which is not the main lanes headed east? Its definitely startling. I start autopilot after this overpass when headed in that direction and don't use it until I am clear of Downtown and all of that construction.