https://www.cnet.com/roadshow/news/uber-self-driving-car-velodyne-crash/

Marta Thoma Hall, president of Velodyne, one of the chief sensor suppliers for the Uber effort, has stated that she is unsure why the vehicle wouldn't have stopped. Based on information provided by the company's lidar (Light Detection and Ranging) system, darkness shouldn't have affected its operation.

Velodyne President Marta Thoma Hall believes that the company's lidar should have been able to detect Ms. Herzberg, thus avoiding a collision.