FHP Lt. Tim Frith said Jabari S. Kemp, 21, had exited Interstate 95 at around 12:25 a.m. EDT when he ran a red light and "T-boned" the other vehicle, the South Florida Sun-Sentinel reported.
All five occupants of the other car were killed.
Police said two of the victims had been identified -- Jason A. Mahlung, 21, and Shonteria Grimsley, 17, both of Riviera Beach.
A third victim was identified only as a 22-year-old man whose family had not yet been notified. The other two victims were women who had not been identified.