The Mustang hit two parked cars on the side of the highway near the Betsy Ross Bridge, killing two people.
Chopper video over the fatal crash on I-95 near Bridesburg
The victims, both men from Philadelphia, were 20 and 22 years old.
Federal officials are looking to see if the advanced driver assistance system was in use at the time.
This is the second case of its kind that the board has investigated since February.