S.B. No. 203 Summary

• Removes the marihuana concentration thresholds from OVI statutes (10 nanograms in urine, 2 nanograms in whole blood/serum/plasma) previously codified in Revised Code sections 1547.11, 3701.143, and 4511.19.

• Establishes new standards requiring prosecutors to prove a person is "under the influence" of marihuana based on evidence of impairment rather than per se concentration limits.

• Creates inference provisions allowing triers of fact to infer marihuana impairment if delta-9-tetrahydrocannabinol concentrations exceed 25 nanograms per milliliter in urine or 5 nanograms per milliliter in whole blood/serum/plasma, subject to rebuttal by either party.

• Modifies evidence admissibility rules to clarify that laboratory analysis methods and reliability evidence remain admissible under Rules of Evidence standards, independent of concentration-based statutory provisions.

• Applies changes to vehicle, watercraft, and vessel operation OVI violations while maintaining existing penalties and sentencing frameworks for alcohol and other drug impairment violations.