A wake will be held for Michael Califano, 44, at the Massapequa Funeral Home on Tuesday and Wednesday.
His funeral will be held at Maria Regina Roman Catholic Church in Seaford on Thursday.
Officer Califano died when a flat bed truck struck his patrol car on the Long Island Expressway in Old Westbury Friday night.
Police say Califano had pulled a vehicle over near exit 39 and was sitting in his car with his lights blinking when it was struck from behind.
He had been on the force for 12 years.
The driver of the truck was identified as John Kaley, 25, of New Britain, Connecticut.
He is charged with criminally negligent homicide and is being held without bail.