NHTSA Complaint #11467471 — 2020 TESLA MODEL 3

While traveling on highway with Full self driving engaged car would occasionally brake and had to quickly press on the gas pedal for fear a car would hit me from behind. This seemed to happen when I approach an overpass but not most overpasses and typically happens once or twice during highway trips of about 80 miles on NJ garden state parkway. I had not reported this to Tesla or had the car checked for this issue and report it now seeing that there were formal reports filed on this issue to NHTSA. I do not recall whether any warning lights or audible alerts occurred during these incidents. First occurred after I took possession of car a couple of years back.