It happened around 2:25 p.m. Saturday, June 18 in South Setauket.
Stephen Napolitano, age 45, of Mount Sinai, was driving a 2017 Nissan van eastbound on Nesconset Highway when he struck a 2013 Ford truck that was stopped in eastbound traffic approximately 1,100 feet west of Wireless Road, Suffolk County Police said.
The collision pushed the Ford truck into the rear of a 2011 Ford Edge also stopped in traffic.
Napolitano was transported to Stony Brook University Hospital for treatment of serious physical injuries.
The driver of the Ford truck,a 17-year-old Setauket boy, and the driver of the Ford Edge, a 35-year-old Miller Place man, were not injured.
All three vehicles were impounded for safety checks. Anyone with information on the crash is asked to contact Sixth Squad detectives at 631-854-8652.
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