The crash happened around 3 p.m. in the eastbound lanes near the Hammonton Exit in Atlantic County.
New Jersey State Police say the driver lost control, sending the car into the woods.
That driver, who survived with moderate injuries, is identified as 19-year-old Nijul Crawford.
Killed in the crash were two brothers, 15-year-old Emmanuel Crawford and 16-year-old Marcus Crawford, both of Camden, along with 19-year-old Maryha Toro of Philadelphia.
Marcus and Emmanuel were Pennsauken High School students. Marcus, who was about to start his junior year, was in the electrical program and ran track, while Emmanuel - known as "Manny" - was about to enter his sophomore year. He played basketball and football.
"It's a very large family - the mom actually works in the district also. They are a great family they are very personable, they were helping out with the school community, they were part of Pennsauken," said Principal Richard Bonkowski.
Pennsauken High School holds graduation a bitter sweet moment for class of 2020. While they’re celebrating a major milestone, the first of four graduations comes a day after two students Emmanuel and Marcus Crawford died in a car crash on the ACE @6abc pic.twitter.com/EDL5tZ3MZM— Christie Ileto (@Christie_Ileto) July 13, 2020
During a graduation ceremony on Monday night, seniors paused to remember Emmanuel and Marcus.
The school says the Crawfords' sister was to receive her high school diploma Monday night. Instead, she and her family are grieving.
Pennsauken Class of 2020 holds a moment of silence for students Emmanuel Crawford, 15, and Marcus Crawford, 16, who were killed in a car crash 24 hours earlier. They’re sister would have graduated tonight, but is forgoing the ceremony to be with her grieving family. @6abc pic.twitter.com/JSnefkTFn3— Christie Ileto (@Christie_Ileto) July 13, 2020
"She's being there for her mom, which is most important because her mom is really going through it, but she's staying strong for her," said graduating senior Evelyn Cortorreal, who is also a family friend.
Marcus and Emmanuel Crawford are brothers who died in a car crash on the AC expressway Sunday. Marcus was in the Pennsauken Electrical program & track, Manny played basketball and football. Their older brother is still hospitalized, his girlfriend also died in the crash @6abc pic.twitter.com/gYXkCRnE3B— Maggie Kent (@MaggieKent6abc) July 13, 2020
Toro was the girlfriend of Nijul Crawford. She was a recent graduate of Excel High School.
"She was a very sweet girl, very intelligent, she was just wonderful," said grandmother Miriam Perez. Toro's family plans to hold a vigil for her on Monday night.
Maryha Toro was also killed the Atlantic City Expressway crash. The 19-year-old recently graduated from Excel Academy in NE Phila. She leaves behind a 3-year-old Dayghter, Nyla. @6abc pic.twitter.com/mWTtT5hMgN— Maggie Kent (@MaggieKent6abc) July 13, 2020
The family was headed to the shore in multiple vehicles when the crash occurred.