An eight-vehicle crash tore through the westbound lanes of the H-1 Freeway just before 4 p.m. Thursday, shutting down three lanes near the critical H-1/H-2 split and sending three people to the hospital, including a 51-year-old woman listed in serious condition. Emergency crews swarmed the scene in Central Oahu as traffic backed up through one of the island's busiest commuting corridors during peak rush hour.
According to the Hawaii News Now report, the Hawaii Department of Transportation said the crash blocked lanes 3, 4 and 5 on H-1 westbound before the split, though access to the H-2 Freeway remained open at the time of the agency's traffic update. Honolulu police and multiple emergency medical units responded to the scene, where paramedics treated three patients. A 39-year-old woman was taken to the hospital in stable condition, while a 41-year-old woman declined further treatment at the scene, per the outlet's account.
Latest In a String of Pearl City Corridor Crashes
Thursday's pileup adds to a rough stretch for the H-1 corridor through Pearl City and the surrounding Central Oahu interchange area. Just two days earlier, a 25-year-old highway construction worker was hospitalized in serious condition after a driver struck him inside a coned-off work zone on the H-1 East Freeway near Pearl City and fled the scene, according to Hoodline's prior coverage. And on June 13, a multi-vehicle crash in the eastbound H-1 lanes in Pearl City injured six people — including an infant and two young children in serious condition — and temporarily shut down traffic between the Waipahu on-ramp and Waimalu off-ramp, per KHON2.
The area near the H-1/H-2 split has proven especially crash-prone. Back in April, an overturned dump truck blocked four westbound lanes and spilled diesel fuel just past the same split, snarling traffic across Central Oahu for hours, the station's report noted. In January, a three-vehicle collision near the Kaamilo Street overpass in Pearl City killed a 27-year-old woman and seriously injured six others after a vehicle rear-ended a truck, as Hoodline reported at the time.
Ongoing Viaduct Work and a Statewide Safety Push
The corridor is also in the midst of long-term construction. The Hawaii Department of Transportation is carrying out the H-1 Pearl City and Waimalu Viaduct Improvement Project between the Halawa Interchange and the H-1/H-2 split, with nightly concrete and deck repair work scheduled to continue through May 2027. That ongoing work adds another layer of complexity to a stretch of freeway that already carries heavy daily commuter traffic between urban Honolulu and West Oahu.
Honolulu public safety agencies have been trying to get ahead of the crash trend. In April, HPD, EMS and transportation departments launched Safer Roads, Together 2026, a joint initiative using high-visibility patrols and targeted enforcement to curb speeding and multi-vehicle crashes on high-volume Oahu roadways, according to the Honolulu Police Department. As of July 23, HPD data showed Oahu had recorded 25 traffic fatalities for the year, a notable drop from the 46 deaths recorded over the same period in 2025, a year that ultimately saw traffic fatalities on Oahu hit an 18-year high of 64 deaths.
What Drivers Are Required to Do at Crash Scenes
State law already requires drivers to slow down and move over for stopped emergency vehicles. Under Hawaii Revised Statutes § 291C-27, drivers approaching a stopped emergency vehicle with flashing lights on any roadway are legally required to slow to a safe speed and, when possible, move into an adjacent lane. Hawaii lawmakers are now considering going further: Senate Bill 2026, introduced during this year's legislative session, would expand the Move Over Law to require drivers to slow down and change lanes for any stationary disabled vehicle displaying hazard lights, flares, or cones, according to LegiScan.
It remains unclear what triggered Thursday's eight-vehicle chain reaction, and Honolulu police have not indicated whether any citations or charges will follow. The Hawaii Department of Transportation had not issued an updated timeline for reopening the blocked westbound lanes at the time of the initial report.
