The crash happened around 4:30 p.m. on the eastbound side of the ICC/MD 200 near Shady Grove Road.
The victim, a 41-year-old Rockville man riding a Kawasaki motorcycle, was pronounced dead at the scene, police said.
Investigators believe the motorcycle was struck by a white Chevy Silverado after the initial crash.
The investigation is being led by the Maryland Transportation Authority Police Collison Reconstruction Unit. Anyone with information is asked to call 410-537-6905.
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