An 80-year-old American man has died after a road accident this morning.The victim crashed his motorcycle into a railing on South Road, near South Shore Park, in Warwick, at about 10am.He was taken to King Edward VII Memorial Hospital, where he died.The incident is the Island's fourth road fatality this year.German national Christoph Nagel died last week following a single-vehicle accident on South Road near the junction with Paynter's Road.