It happened just before 12:30 a.m. on Interstate 440 near Glenwood Avenue.
The Raleigh Police Department said 50-year-old Thomas John Anstey was headed west on I-440 riding a Honda motorcycle when he was hit from behind. He was pronounced dead at the scene.
Investigators said the driver who allegedly hit Anstey -- 23-year-old Keira Jo Sprouse -- left her car, but fled the scene before officers arrived. She was later found at her home about 10 miles away.
Four hours after the crash, her blood-alcohol level was measured at .13. The legal limit in North Carolina is .08.
Police say she was traveling an estimated 115 mph before the collision.
Sprouse is charged with felony death by vehicle, felony hit and run, DWI, no license, expired tag, and no insurance.
Bond was initially set at $26,000, but raised Tuesday to $1.1 million.
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