A 30-year-old Columbia man died Saturday after he lost control of his motorcycle and slammed into the rear of a tractor-trailer parked on Brookdale Road in Elkridge, according to Howard County police.

The victim was not wearing a helmet and was not licensed to drive the vehicle, police said.

The accident occurred shortly before 1 p.m. near Brookdale Road and Route 1, police said. Police said the motorcyclist, Juan Carlos Calderon Mejia, was taken to University of Maryland Shock Trauma, where he died of his injuries.