24-year-old Steven Michael Lam of Brookhaven, Pa. was pronounced dead at the scene.
The crash happened in the southbound lanes at Exit 1 (Chichester Road) shortly after 2:15 a.m.
Pennsylvania State Police say the driver of the striking vehicle did not stop at the scene, but did call 911 to say he had just hit something near the state line.
Police found the man, towed his gray Dodge Charger to an impound lot and questioned him.
There was no immediate word if he would be charged.
Police closed down one lane of I-95 southbound overnight for the investigation.