Eyewitness News is told the man, in his 40s, was struck near the shoulder of the northbound lanes, near Webster Avenue, just before 12:15 a.m.
The person was pronounced dead at the scene.
Officials say the crash caused a chain reaction of accidents, and five vehicles were damaged in the smash up.
None of the drivers were seriously injured.
Police were investigating why the man pulled over on the side of the parkway. He did not have motor vehicle problems.
Charges are expected to be filed in connection with the crash. The driver stayed at the scene and was not intoxicated.
The northbound parkway was closed for at least five hours for the investigation, but it was later reopened.