https://www.reuters.com/article/us-uber-crash/ntsb-cites-uber-distracted-backup-driver-in-fatal-self-driving-crash-idUSKBN1XT2IL >The U.S. National Transportation Safety Board (NTSB) on Tuesday took Uber to task for what it said were weaknesses in its approach to safety as it laid out its findings in the investigation of the first-ever death involving a self-driving vehicle, which also cited the vehicle's back-up safety driver.