According to coroner Dr. Stephen Diamantoni, the three fatalities were juveniles two females and one male.
The deceased are siblings a 15-year-old male, a 13-year-old female and a 6-year-old female, according to state police
Emergency dispatchers said the crash happened at 7:51 a.m. at Little Britain Road North and Black Road, narrow two-lane roads in rural Little Britain Township.
According to police, the buggy occupied by 7 juveniles was traveling west on Black Road when it failed to stop at a stop sign at the intersection. The truck, which was traveling south on Little Britain Road North, struck the buggy on the right passenger side.