John Frederick Cornelius of Fort Washington died at University of Maryland Shock Trauma, where he was taken shortly after the 7:12 p.m. accident.
Covington, who was driving a BMW, had cut off several vehicles as he merged onto the highway, police said. He also had struck a pick-up truck minutes before hitting the rear of Cornelius' vehicle, police said. The impact of the collision forced Cornelius' Nissan off and then back on to the highway, where it overturned in a travel lane, police said.
Covington and the truck driver were not injured in the crash.
Anne Arundel County Police's Traffic Safety Section is continuing the investigation. Anyone with information on the accidents should contact Metro Crime Stoppers Hotline at 1-866-7LOCKUP.