U.S. Transportation Secretary Anthony Foxx visited Pittsburgh on Wednesday to view cutting-edge technology at one of the world’s epicenters of it, Carnegie Mellon University’s National Robotics Engineering Center in Lawrenceville.  He saw high-beam headlights that direct a dark spot toward the eyes of oncoming drivers to reduce glare, while continuing to illuminate everything else; headlights that sense falling snowflakes and direct the beam between the flakes rather than on them to improve visibility; a snow plow that projects an image on the windshield of the road when it was not snowing, to give drivers awareness of snow-covered obstacles and lane markings.