Why self-driving vehicles need a crystal ball

A pedestrian stands along a street with one foot on the curb and the other in the crosswalk. A bicyclist lifts a foot off the ground and places it on a pedal. A jogger maintains a steady pace while heading toward an intersection. Determining whether those road users intend to wait for traffic to pass or start their trips across the street has become one of the most vexing challenges for developers of self-driving systems.

http://www.autonews.com/article/20181201/MOBILITY/181209975/autonomous-vehicles-pedestrians