https://www.cnet.com/roadshow/news/apple-self-driving-car-testing-report-nhtsa/

To qualify as a safety driver for Apple's self-driving car program, you need to have a driving record free of serious accidents, DUI convictions, suspensions or revocations for at least the last 10 years. Once these requirements are met, prospective drivers need to pass a drug screen and a background check.

Once hired, Apple safety drivers can expect to be subjected to a barrage of training and evaluation beginning with a defensive driving course followed by vehicle-specific training and testing to help sharpen their reflexes.