Ellen Laa, 41, of Honolulu was pronounced dead at Castle Medical Center following the 7:08 a.m. crash at the intersection of Mokapu Saddle Road and Kapa'a Quarry Road, according to the office of the city medical examiner.

Laa was riding in the front seat of a 1991 Toyota sedan traveling on Mokapu Saddle Road toward Kailua. Police said the driver, a 44-year-old Honolulu man, failed to stop at a red light at the intersection of Kapa'a Quarry Road and collided with a 1997 Peterbilt semi-truck turning left from Kapa'a Quarry Road onto Mokapu Saddle Road.

Laa suffered injuries to her head, legs and torso, police said. The driver of the Toyota was taken to The Queen's Medical Center in serious condition.

The driver of the car suffered injuries to his torso, police said.

Police said the man may have been under the influence of alcohol and drugs and was speeding when he ran the red light.