Okla. Stat. tit. 76, § 76-58.1: Subsequent measures not admissible - Exceptions

When, after an injury or harm allegedly caused by an event,

measures are taken that, if taken previously, would have made the

injury or harm less likely to occur, evidence of the subsequent

measures is not admissible to prove negligence, culpable conduct, a

defect in a product, a defect in a product's design, or a need for a

warning or instruction. This rule does not require the exclusion of

evidence of subsequent measures when offered for another purpose,

such as proving ownership, control, or feasibility of precautionary

measures, if controverted, or impeachment.