NHTSA Complaint #11484437 — 2021 TESLA MODEL 3

Unexpected phantom braking occurring randomly but on multiple occasions during a 2000 mile multi day trip. Several incidents of a hiccup resulting on a jolt but at least three incidents of rapid and sudden deceleration without an observed corresponding hazard. Occurred a couple times while cresting a hill on single and multi lane roads. One severe incident occurred while passing a semi truck on a multiple lane highway. Causes high anxiety and potential for a crash, especially from behind. This has not been inspected by Tesla or others but note many reports of this online. No warning prior to event but cruise control did not work properly after event and required reseting.