Police have identified the man killed in Thursday morning's on Sunrise Highway as Floridian Rick Poulos.
The accident occurred about a half-mile east of Waverly Avenue in Patchogue when Poulos' 2010 Volkswagen veered off the westbound roadway and struck a guardrail on the right shoulder at 8:36 a.m., police said.
The car then crossed all three lanes of traffic and struck the guardrail in the median, police said.
Poulos, 54, of Port St. Lucie, was transported by North Patchogue Ambulance to Brookhaven Memorial Hospital Medical Center,where he was pronounced dead.
The investigation is continuing and police are asking anyone who may have witnessed the incident to contact the Fifth Squad at 631-854-8552.
See a photo of the car involved in the crash here on the Stringer News Twitter feed.