That's why two tests drivers makes sense in the early days and not keeping extended hours.
Companies like https://comma.ai/ are taking a much better approach IMO by keeping it simple by first perfecting lane assist/highway driving + building a driver watching device which alerts them when they stop paying attention for x amount of time. Which Uber should be investing in for their test drivers.
Another important thing is being realistic about expectations, of course 100% paying attention is unrealistic even for normal drivers, accidents will happen regardless. Hitting jaywalkers on a dark multi-lane high speed road is a lot less bad than other possible scenarios and there really hasn't been that many accidents yet.
Companies like https://comma.ai/ are taking a much better approach IMO by keeping it simple by first perfecting lane assist/highway driving + building a driver watching device which alerts them when they stop paying attention for x amount of time. Which Uber should be investing in for their test drivers.
Another important thing is being realistic about expectations, of course 100% paying attention is unrealistic even for normal drivers, accidents will happen regardless. Hitting jaywalkers on a dark multi-lane high speed road is a lot less bad than other possible scenarios and there really hasn't been that many accidents yet.