Tesla’s robotaxi rollout has been rockier than the fanboys and influencers who got early access to the company’s driverless vehicles would like you to believe. Several incidents involve “phantom braking,” in which the vehicle stops suddenly for seemingly no reason. Tesla’s camera-only perception system has long had problems with phantom braking, appearing to misinterpret shadows, road marking, or other environmental factors, which triggers the vehicle’s automatic emergency braking. The Reddit list includes three incidents of phantom braking. One provision allows state regulators to revoke permits if a company’s autonomous vehicles are deemed a safety risk.