The Honolulu medical examiner has identified the 23-year-old man who died in the motorcycle crash on the H-3 Freeway Sunday afternoon.
The medical examiner says Colin Ferguson of Kailua died of head injuries.
Police say Ferguson lost control of his motorcycle and struck a guard rail at around 12:05 p.m.
A second motorcycle was with Ferguson, but did not stop, according to an independent witness. Police say the second motorcycle was not involved in the crash.
Officers shut down the H-3 Freeway heading towards Kaneohe at the Kamehameha Highway junction for about two hours while investigating the crash.
Investigators say speed was a factor in the crash.
This was the 24th traffic fatality on Oahu compared with 21 at this time last year.