A 23-year-old man was critically injured after the vehicle he was operating struck a parked trailer in Pearl City today, Honolulu police said.

The crash occurred on Waihona Street just after 7 a.m.

Police said the motorist was traveling eastbound on Waihona Street when he veered into the opposite lane of traffic and shoulder area and struck a parked trailer.

The crash caused the trailer to back into another parked trailer.

Honolulu Emergency Medical Services personnel responded and treated the man and took him in critical condition to a hospital.

He was not wearing a seat belt at the time of the crash.

Police said speed may have been a factor but it is unknown whether drugs or alcohol were involved. The investigation is ongoing.

Anyone with information on the crash is asked to call the Honolulu Police Department’s Traffic Division at 808-723-3413.