Hilo Driver Charged in Fatal Daniel K. Inouye Highway Crash

A 39-year-old Hilo man is facing manslaughter and other felony charges after police say he tried to pass several vehicles in thick fog on Daniel K. Inouye Highway, crossing into oncoming traffic and slamming into two motorcycles, killing one rider and seriously injuring the other. Jeremy Alexander Fleming was driving a blue 2023 Tesla sedan westbound near the 46-mile marker in South Kohala when the collision happened Saturday afternoon. According to Big Island Video News, the crash was reported at approximately 3:07 p.m. as Fleming attempted to pass several westbound vehicles by entering the eastbound lane. Roadway and weather conditions at the time included light rain, water on the roadway, and thick fog that significantly reduced visibility in both directions. The Tesla collided head-on with a gray 2020 Harley-Davidson motorcycle traveling eastbound, and that motorcycle then struck a second motorcycle riding eastbound in the same lane. William Joseph Simao, a 55-year-old motorcycle operator from Hilo, sustained fatal injuries in the collision and was pronounced deceased at the scene at approximately 3:55 p.m., per the same account. The operator of the second motorcycle, a 35-year-old Hilo man, sustained significant injuries and was first transported to North Hawaiʻi Community Hospital before being medically evacuated to The Queen's Medical Center on Oʻahu. A red 2014 Dodge Ram 1500 pickup truck was also involved, sustaining damage from collision debris; its occupants were not injured. The report notes that the Tesla and both motorcycles came to rest down an embankment adjacent to the highway. South Kohala patrol officers and emergency personnel responded to the scene, and all vehicles involved were secured as evidence. Fleming was treated for minor injuries at North Hawaiʻi Community Hospital and was arrested at approximately 7:55 p.m. after his release from the hospital, the outlet reports. He was charged with manslaughter, negligent homicide in the second degree, and negligent injury in the first degree, and bail was set at $400,000, which he was unable to post. He remains in custody at the Kealakehe police station cellblock, and the Hawaiʻi Police Department's investigation is ongoing. Under Hawaii Revised Statutes § 707-702, manslaughter is classified as a Class A felony punishable by up to 20 years in prison upon conviction, according to FindLaw. The additional charges of negligent homicide in the second degree and negligent injury in the first degree are each Class C felonies under Hawaii Revised Statutes § 707-703 and § 707-705, carrying potential sentences of up to five years in prison. It's worth noting that these charges remain allegations at this early stage, with the case yet to be tested in court. Hawaii Revised Statutes § 291C-45 prohibits driving on the left side of the road to overtake another vehicle unless the passing lane is clearly visible and free of oncoming traffic for a sufficient distance. Saturday's crash was the latest in a string of deadly passing-related collisions on the same corridor. Hoodline previously reported that a head-on crash killed two drivers near mile marker 26 in May after an improper passing attempt, and a Christmas Eve collision near mile marker 13 last December led to the arrest of a Hilo driver on suspicion of first-degree negligent homicide and impaired driving. The highway's geography compounds the risk. Daniel K. Inouye Highway spans high-elevation terrain over 6,600 feet across the Humuʻula Saddle between Mauna Kea and Mauna Loa, creating microclimates prone to sudden thick fog and torrential downpours that impair visibility, according to To-Hawaii.com. A nationwide driver survey cited by the same outlet ranked the highway as the fourth most feared road trip route in the country due to its rapid weather changes, high travel speeds, and remote stretches. Hawaiʻi Island traffic fatalities totaled 24 in 2026, compared with 16 during the same period in 2025, per the Big Island Video News report. Police have continued targeted enforcement along the corridor: during a high-visibility operation on the highway from June 8 to June 14, Hawaii Police Department officers made 450 vehicle stops and issued citations for 327 speeding violations, five reckless driving violations, and two unsafe passing violations, according to a department statement reported by KWXX. State officials are also pursuing longer-term fixes. The Hawaii Department of Transportation reinitiated environmental impact reviews in May and hosted a public open house seeking federal funding for a proposed 10.5-mile extension of the highway between Māmalahoa Highway and Queen Kaʻahumanu Highway. Meanwhile, police are urging motorists to exercise extreme caution and maintain a safe speed in adverse weather and reduced visibility, and to avoid attempting a passing maneuver unless it can be completed safely and legally. Anyone who witnessed the collision or has information is asked to contact Officer Adam Roberg with the Hawaiʻi Police Department.