Car Accident Laws in Ohio (2026)

Ohio follows modified comparative fault with a 51% bar under ORC § 2315.33. Ohio's car accident law includes several state-specific features: Ohio refers to drunk driving as OVI (Operating a Vehicle Impaired) rather than DUI or DWI; Ohio's insurance minimums are modest ($25K/$50K liability); and Ohio courts apply the "physical facts rule" allowing courts to disregard testimony that is contradicted by physical evidence of the accident.

Ohio's 51% Modified Comparative Fault

Ohio Revised Code § 2315.33 provides that a plaintiff is barred from recovery if their proportion of fault is greater than 50% — a 51% bar. This means a plaintiff found exactly 50% at fault can still recover (50% of damages), while a plaintiff found 51% or more at fault recovers nothing. Ohio juries return special verdicts allocating percentages of fault among all negligent parties, including the plaintiff. This allocation directly determines the amount and availability of recovery. Ohio also applies several non-party fault allocation rules — defendants can request that fault be allocated to non-parties (including empty chairs like bankrupt defendants or government entities), which can reduce each defendant's proportional liability.

Ohio Uninsured Motorist Coverage

Ohio requires insurers to offer uninsured motorist (UM) and underinsured motorist (UIM) coverage in the same amount as the policyholder's liability coverage, but policyholders can reject or reduce it in writing (ORC § 3937.18). Ohio's UM/UIM law has been significantly revised multiple times — the 2001 "Am. Sub. H.B. 261" reduced mandatory UM/UIM requirements, and Ohio's UM/UIM jurisprudence reflects the pre- and post-2001 differences. Many Ohio policyholders carry UM/UIM only at minimum limits, leaving significant gaps when the at-fault driver is uninsured or underinsured.

Ohio's Physical Facts Rule

Ohio courts apply the physical facts rule: if a witness's testimony is irreconcilably contradicted by established physical facts and the laws of nature, the court may disregard the testimony. In car accident cases, this means that if a witness claims a vehicle was traveling slowly but the physical evidence (crush damage, skid marks, airbag deployment) is inconsistent with low speed, the court can reject the testimony. This rule is applied in both jury and bench trials and affects accident reconstruction expert testimony that courts admit to establish what the physical evidence proves about speed, angle of impact, and other facts.

Ohio Hit-and-Run and Unidentified Vehicle Claims

Ohio law allows UM claims against an unidentified vehicle (phantom vehicle) when the unidentified vehicle made physical contact with the insured's vehicle. Ohio courts have strictly interpreted the "physical contact" requirement — a phantom vehicle that ran the plaintiff off the road without making contact does not trigger UM coverage under most Ohio policies. Some policies have been broadened to cover non-contact phantom vehicle claims, but the physical contact requirement remains the default rule in Ohio's UM context.