Cannabis Consumption and Driving Impairment Assessment on a Closed Course

Inclusion Criteria: * Possessing a valid California driver's license * Cannabis use in the past six months * Willing and able to abstain from alcohol, cannabis, and other recreational drugs for 24 hours prior to scheduled participation * Willing and able to avoid driving and operating heavy machinery for at least four hours after participation * Residence within approximately 15 miles of the study site * Possessing the capacity to provide informed consent Exclusion Criteria: * Completion of a roadside sobriety test during the previous 12 months * Physical or psychological conditions that can be exacerbated by cannabis use, or for which cannabis use is contraindicated * Potential presence of Cannabis Use Disorder as assessed by a modified version of the Cannabis Use Disorder Identification Test * Potential presence of Substance Use Disorder as assessed by a modified version of the Drug Abuse Screening Test * Pregnancy or breastfeeding reported * Unwillingness to be transported by taxi * Having been convicted of Driving Under the Influence (DUI) within five years prior to scheduled participation * Parole or probation status * One or more felony convictions on record involving aggressive or dangerous criminal activity * Any of the following at the time of the experimental session: breath alcohol content of .01% or greater; positive pregnancy test; cannabis consumption considered unsafe following medical checkup by the study nurse; or driving test behavior considered hazardous…