Honolulu police are investigating whether speed or alcohol were factors in a moped crash in Aiea early Saturday.
It happened on the westbound Moanalua Freeway near the Aiea off ramp around 1 a.m.
Police say the 24-year-old female moped driver struck a curb and hit the median.
She was unconscious when police arrived.
Paramedics took the woman to the trauma center in critical condition