PITTSBURGH (AP) On a three-lane test track along the Monongahela River, an 18-wheel tractor-trailer rounded a curve. No one was on board. A quarter-mile ah
Within three to four years, thousands of self-driving tractor-trailers are expected to travel on America's public freeways. But some might be seen on the roads as soon as this year.
Within three or four years, Aurora and its competitors expect to put thousands such self-driving trucks on America s public freeways. The goal is for the trucks, which can run nearly