A 57-year-old Hana woman who died after she was thrown from a Jeep that dropped off Hana Highway was identified this afternoon by Maui police as Camile Ulani Combo.

She was Maui’s first traffic fatality for 2012 compared with none at this time last year.

Police suspect speed and alcohol were factors in the deadly crash at 3:42 p.m. Monday.

Police said Ricky Johnson was driving a Jeep Wrangler toward Hana on Hana Highway when he crossed the center line and drove off the makai side of the road, east of Nahiku Road. The Jeep dropped about 5 feet and overturned.

Combo was not wearing a seat belt and was thrown from the vehicle. She died several hours later at the hospital.

Johnson, 39, was using his seat belt and was treated and released from the hospital. He was booked and released for investigation of first-degree negligent homicide.

Police said the stretch of road where the crash occurred has a 15 mph speed limit and no guardrails.