NHTSA Complaint #11456811 — 2022 TESLA MODEL 3

Vehicle's adaptive cruise control is ON. Auto-steer is OFF. Vehicle rapidly phantom breaks under these observed conditions: 1. As the vehicle is passing a semi-truck with the semi in the lane immediately to the right. The camera shows the semi clearly in the lane to the right. The semi is not veering over into my lane. The cruise control seems to think (incorrectly) that the semi is in danger of coming into my lane. The vehicle rapidly slows by +/- 5 mph, which made a couple of folks following me irritated as my car is slowing and brake lights are coming on for no reason. I can decrease this reaction by the vehicle by steering the vehicle to far left side of my lane when passing the semi, but even then, it would still sometimes phantom brake. This happened about 15-20 times during a 2000 mile trip. This reaction by the vehicle, is decreasing safety, not increasing it. 2. Same condition with the adaptive cruise control on (auto steering off), passing a semi that is in the lane immediately to the right, but this time the car rapidly slows itself when I am about 5 car lengths back of the truck. This is an unsafe problem and needs to be fixed asap. If fixing it is going to take time, then Tesla should be required to turn off the adaptive function with cruise control so only speed control is functioning.