NHTSA Complaint #11526340 — 2019 TESLA MODEL 3

Driving on a clear, sunny day in Arizona on interstate 8 at highway speed with the Tesla AutoPilot engaged. There were no vehicles in front of me and no obstructions in the road when the car did heavy braking (aka phantom braking) for no known reason. I immediately had to override the braking with pressing on the accelerator. This occurred multiple times on the same road. If a vehicle had been traveling behind me when this happened, it would be highly likely that a collision would occur because of the random nature of the extreme braking. I did not use the adaptive cruise feature the rest of the trip in fear that a collision would occur. No warning messages were/are present. The Model 3 I drive is equipped with sensors on the front bumper that (I believe) Tesla has deactivated to use vision-only instead. I drove for years using the non-vision (sensor) method without experiencing phantom braking, so this experience is new to me.