The 2002 Oldsmobile motored southbound on I-95 in New Haven. It was a sunny day in August of 2014 and Gwendolyn Buskey was driving the car, which her mother had loaned her. Her passenger was Vera Mercer, a pregnant friend who Buskey was driving to Bridgeport Hospital for a scheduled caesarian section. Around exit 46, a tractor-trailer in front of Buskey’s vehicle slowed down due to traffic congestion. Buskey started to reduce speed as well. Behind her was another tractor-trailer driven by Fidel Rodriguez of Reading, Pa. Highway safety analysts say it’s a common scenario.