Earlier this week, the Tempe, Ariz., police released a video of the fatal accident involving a pedestrian and an Uber self-driving vehicle. We asked experts to analyze the footage and explain what factors may have caused systems to fail. Photo: National Transportation Safety Board Don’t miss a WSJ video, subscribe here: http://bit.ly/14Q81Xy More from the Wall Street Journal: Visit WSJ.com: http://www.wsj.com Visit the WSJ Video Center: https://wsj.com/video On Facebook: https://www.facebook.com/pg/wsj/videos/ On Twitter: https://twitter.com/WSJ On Snapchat: https://on.wsj.com/2ratjSM