https://phys.org/news/2018-07-uber-resumes-autonomous-cars-manual.html

"We're starting with cars in manual mode, with a mission specialist sitting behind the wheel and manually controlling the vehicle at all times," Uber said in a statement announcing the new testing in Pittsburgh, Pennsylvania.

"While we are eager to resume testing of our self-driving system, we see manual driving as an important first step in piloting these safeguards."