In both cases, the victims were not the ones attempting to overtake other vehicles.

A 50-year-old Waipahu man died yesterday at Kapi'olani Medical Center-Pali Momi from injuries suffered in a 4:12 p.m. collision between two Toyota pickup trucks on Kamehameha Highway, one-tenth mile west of Kuala Street in Pearl City.

The man was driving east when his vehicle was struck by a pickup truck that had veered off the westbound roadway, police said.

According to investigators, the driver of the second truck, a 20-year-old Waialua man, apparently lost control of his truck while attempting a pass from the left lane. The man was in guarded condition today at The Queen's Medical Center with multiple fractures.

On Sunday night in Waimanalo, a 57-year-old man riding a Harley-Davidson motorcycle was killed in a collision with a Ford Thunderbird attempting to pass a pickup truck on Kalaniana'ole Highway near Bell Street that veered into his path.

Speed on the part of the passing motorists appears to be a contributing cause in both fatal collisions, police said. Alcohol may also be a factor in the Waimanalo incident.

Counting Sunday's death, four people have been killed this year on the stretch of Kalaniana'ole Highway through Waimanalo.

Neither of the two men who died has been positively identified by the medical examiner's office. The deaths raised O'ahu's traffic fatality total for the year to 17.