BIZ WATCH: An uncertain road test for artificial intelligence

The first thing to understand about the fatal incident involving a pedestrian and self-driving Uber vehicle is the lay of the land, literally. Primary avenues in metropolitan Phoenix are very wide. The typical right of way for a major "arterial" is 140 feet. This is a metro engineered for driving, moving cars quickly and efficiently. Thousands of shade trees were felled over the decades to widen streets.