Oregon drivers contend with a collision law framework built on modified comparative fault, mandatory personal injury protection, and road conditions that swing from waterlogged Willamette Valley freeways in January to smoke-obscured high desert two-lanes in August. ORS 31.600(1) establishes the 51-percent bar: a plaintiff whose own fault is not greater than the combined fault of all defendants recovers, but a plaintiff found 51 percent or more at fault is barred entirely. This means a driver who was speeding on a rain-slick I-5 segment near Wilsonville, but who was struck by a logging truck running a red light, may recover if a jury attributes the logging truck driver 51 percent or more of the fault — even if the speeding driver was 30 or 40 percent responsible. Oregon's approach contrasts with California's pure comparative fault (recovery at any fault level) but is more plaintiff-friendly than contributory negligence states that bar recovery entirely for any contributing fault.
What distinguishes Oregon's auto insurance framework from most western states is the mandatory personal injury protection requirement. ORS 742.524 requires every Oregon auto insurer to include a minimum of $15,000 in PIP coverage on each motor vehicle liability policy. Oregon PIP pays the policyholder's medical expenses, essential services, and a portion of lost wages — up to 70 percent of gross monthly income, capped at $3,000 per month — without regard to who was at fault for the collision. The PIP carrier pays first; the tort claim against the at-fault driver runs separately. Oregon PIP subrogation rights are governed by ORS 742.534: after the injured person has been made whole by the tort recovery, the PIP insurer can seek reimbursement from the at-fault driver's liability insurer. The made-whole doctrine protects injured Oregonians from having their PIP reimbursement claims swallow all of the tort recovery — if the total recovery is insufficient to make the plaintiff whole, the PIP subrogation claim is subordinated to the plaintiff's recovery.
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