A 54-year-old Stillwater woman is dead after a driver struck her while she was walking across Interstate 35 in Norman and then left the scene without stopping. Ladonna Marcel-Hillier was crossing the southbound lanes near South Robinson Avenue on August 1 when she was hit, according to an Oklahoma Highway Patrol collision report.
Troopers say they currently have no information about the vehicle or driver involved, according to KOCO-TV. The Oklahoma Highway Patrol's collision report identifies Marcel-Hillier as the woman killed and confirms that a vehicle struck her while she was crossing the interstate, but investigators have not released a description of the car or any details about who was behind the wheel.
A Driver Still Unaccounted For
Under Oklahoma law, drivers involved in any collision are required to stop immediately, help anyone injured, and provide their name, address, registration, and license information, per Recording Law. Whoever hit Marcel-Hillier did none of that, leaving OHP investigators to piece together what happened without a suspect vehicle or driver identity.
If the driver is eventually identified, the legal exposure is significant. Oklahoma Statute Title 47 § 10-102.1 classifies leaving the scene of a fatal accident as a Class B4 felony, punishable by one to ten years in state prison, fines between $1,000 and $10,000, and mandatory revocation of the driver's license upon conviction, according to Justia Law's summary of the statute. It remains unknown why Marcel-Hillier was on foot in the southbound lanes of I-35 that night, and OHP has not said whether any physical or surveillance evidence exists that could help identify the driver.
A Dangerous Stretch of Highway
The section of I-35 running through Norman is no quiet backroad. City of Norman transportation planning documents put daily traffic volumes on key segments of the interstate at approximately 136,800 vehicles, underscoring how exposed a pedestrian would be crossing those lanes at any hour. The road serves as the primary high-speed connector between Norman and the Oklahoma City metro area.
Marcel-Hillier's death fits into a broader and troubling pattern on Oklahoma highways. A 2026 report from the national transportation research group TRIP found the state recorded 4,127 traffic fatalities between 2020 and 2025, with a 2025 fatality rate 19% higher than the national average. Nationally, 75% of fatal pedestrian crashes occur away from intersections, at locations like open highway lanes, according to Fatality Analysis Reporting System data published by the Insurance Institute for Highway Safety.
The danger of foot traffic on Oklahoma freeways has surfaced elsewhere in the state this year. In June, a pedestrian died in a central Oklahoma highway corridor after being struck by as many as six vehicles overnight, according to KOCO 5 News reporting on that separate incident. Pedestrian deaths made up roughly 13% of all Oklahoma traffic fatalities in 2021, when 104 pedestrians were killed statewide, per data from the Oklahoma Highway Safety Office cited by the law firm Ylla|Gosney Attorneys at Law.
What Happens if the Driver Is Never Found
The Oklahoma Highway Patrol holds primary jurisdiction over serious and fatal collisions on interstate highways outside municipal boundaries, a responsibility Hoodline has previously reported extends to specialized collision reconstruction for fatal highway cases. That means OHP, not local police, will lead any effort to track down the driver who left Marcel-Hillier at the scene.
If the driver is never identified, Oklahoma insurance rules still offer the family a path to financial recovery. Surviving family members of hit-and-run victims can pursue claims through Uninsured Motorist policy provisions even when the at-fault driver remains unknown, according to the law firm Martin, Jean, Jackson, Martin & Peach. For now, the investigation into who struck Ladonna Marcel-Hillier on I-35 remains open, with no vehicle description and no suspect named.
