Ohio has a per se drugged driving law enacted for cannabis, cannabis metabolites, and other controlled substances.

Under Ohio's law, motorists with detectable levels of THC in the blood above 2 ng/ml or detectable levels of THC-COOH in the urine above 15 ng/ml are guilty of DUID. (Ohio Revised Code Annotated Section 4511.19, Amended by Senate Bill 8)

Penalty:

• If violated, a mandatory jail term of three consecutive days (seventy-two consecutive hours.) The court may sentence an offender to both an intervention program and a jail term. The court may impose a jail term in addition to the three-day mandatory jail term or intervention program. However, in no case shall the cumulative jail term imposed for the offense exceed six months.
• The court may suspend the execution of the three-day jail term under this division if the court, in lieu of that suspended term, places the offender under a community control sanction and requires the offender to attend, for three consecutive days, a drivers' intervention program.
• License may be suspended from a definite period of six months to three years.

Ohio's law took effect in August 2006.