NHTSA Complaint #11578677 — 2021 TESLA MODEL 3

After a recent update to the "Full Self-Driving" software stack (new version2023.44.30.25; FSD Beta v12.3), we drove from Charleston to Atlanta and back, with much of the trip on Interstate Highways [XXX] and [XXX]. A very troubling new phenomenon was noted: every time we passed a "Minimal Speed" sign, the car would drop the Speed Limit setting on the control panel to 40 MPH. In many of the iterations of this problem, the speed of the car dropped precipitously, creating a potentially dangerous situation. I had the software set to Auto speed limit offset, which in some circumstances maintained the speed around 70 MPH because it was keying on surrounding traffic, but in some instances the speed did not reset until we passed another "Speed Limit 70 MPH" sign. Often, I had to react by manually raising the Max Speed setting to the speed limit. This happened repeatedly (essentially every time we passed a Minimum Speed sign, unless the sign was obstructed from camera view by a semi). Please address this with Tesla and ask for an immediate bug fix and recall (software update). It is potentially very dangerous. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)