An elderly man was critically injured today in a collision involving a sedan and city bus on North School Street near Kamehameha IV Road.

The collision was reported at 8:30 a.m. and the injured man from the car was taken to The Queen's Medical Center. Police said the bus driver, 51, was not injured. There were no passengers on the bus, which was not in service at the time of the accident.

Roger Morton, director of operations for O'ahu Transportation Services, said the bus driver saw what was happening and stopped his bus.

"He said there was no-where for him to go," Morton said. "He was in the left lane heading 'ewa because of parked cars and saw the car approaching and cross over the center line."

In the fatal accident last night in Waimanalo, police arrested a 29-year-old man on suspicion of drunken driving in connection with the collision on Kalaniana'ole Highway near Kaiona Beach Park involving a car, motorcycle and pickup truck.

Police Sgt. John Agno said the 29-year-old man was driving a black 1992 Ford Thunderbird on Kalaniana'ole Highway that collided head-on with a Harley-Davidson motorcycle. Police said the Thunderbird was trying to pass a Nissan pickup when it hit the motorcycle at 11:35 p.m. The motorcyclist, a 57-year-old man who was not wearing a helmet, was pronounced dead at the scene.

The Nissan pickup truck was hit by either the rider who was thrown from his motorcycle upon impact with the Thunderbird or his motorcycle, Agno said. The 56-year-old man driving the pickup truck was not injured, the investigator added.

Another man, 29, who was a front-seat passenger in the Thunderbird, was taken to The Queen's Medical Center, where he was listed today in serious condition.

Speed and alcohol appear to be contributing factors for the collision, which occurred on the highway 477 feet west of Bell Street, said Agno.

The Thunderbird's driver was treated for injuries at Castle Medical Center and released. He was arrested on suspicion of driving under the influence and negligent homicide at the Kailua police substation and was transferred to HPD's central receiving cellblock today after being held overnight in Kailua.

He will likely be released without charges today pending further investigation.

The medical examiner's office this morning had not yet established positive identification of the dead man. The fatality is O'ahu's 16th of the year.