NHTSA Complaint #11547282 — 2022 TESLA MODEL 3

I took a recent road trip of 1,200 miles across the southwest. Numerous times while using adaptive cruise control the vehicle suddenly and violently braked for no apparent reason. This was particularly concerning when passing trucks. One particular event was on interstate 5 when passing a big rig truck, I was along side the truck with a following car tailgating me, my car suddenly braked hard, creating a risk of rear end collision at 70 miles per hour. I was able to accelerate to avoid a collision. I did not keep track of the number of events of sudden unanticipated braking, but I would estimate more than 50 instances. They vary from momentary slow down to violent sudden breaking.