https://www.reuters.com/article/us-uber-crash/uber-disabled-emergency-braking-in-self-driving-car-u-s-agency-idUSKCN1IP26K >Uber [UBER.UL] disabled an emergency braking system in a self-driving vehicle that struck and killed a woman in Arizona in March and which failed to properly identify the pedestrian, raising serious questions about its performance, the National Transportation Safety Board said in a preliminary report released on Thursday.