The death of the 31-year-old Waikiki man, whose identity has not been released, is the third traffic fatality on O'ahu since Sunday and the 34th of the year compared with 36 on the same date in 2003.

Police said the man was traveling toward Waikiki on Nimitz Highway when his moped hit the side of a speeding van, which ran a red light to make a left turn at the Richards Street intersection near the Hawaiian Electric Co. power plant at 12:20 a.m. The driver of the white van, possibly a Dodge Ram, drove off without helping the injured man, who police said suffered "massive head and body injuries."

The man died at Queen's at 1:34 a.m.

According to a witness, the van has license plates starting with "BF6" and police said it should have damage to its right fender and passenger-side door. Anyone with information on the van or its driver is asked to call police at 529-3499 or Crime-Stoppers at 955-8300 or *CRIME on a cellular phone.

Eastbound lanes of Nimitz between Alakea and Richards streets were closed until 3:36 a.m.

The medical examiner's office, meanwhile, has not received positive confirmation of the identity of a man killed yesterday when a flatbed truck veered into the path of his van on Kamehameha Highway near the Crouching Lion Inn.

Also, autopsy findings on 79-year-old Thelma Higa, who died at Queen's on Sunday after being injured in a two-car collision on Farrington Highway and Awamoku Street, do not yet include information on the cause of death.