The purpose of this confidential research study is to understand the effects of cannabis use on driving in daily life among people who smoke or vape medical cannabis.

You may qualify for this study if you meet the following criteria.

Inclusion Criteria:

• Use medical cannabis 3+ days per week
• Have a valid driver’s license
• Not dependent on alcohol or other drugs
• Have an Android phone
• Drive at least 60 miles per week
• If female, not pregnant or breastfeeding
• No history of driving while intoxicated (DWI) or driving under the influence (DUI) arrests

Once enrolled, this confidential study involves: 

• Completing the first study assessment
  • Saliva drug screen, urine pregnancy test (if applicable), interview, and questionnaires
  • Interview and questionnaires cover topics such as driving habits, mental and physical health, substance use, and quality of life and will take 2 hours to complete
    • Questionnaires can be done remotely (a survey link can be sent), and the interview can be done by zoom or by phone, at the participant’s convenience
• Installing 2 smartphone apps on their Android phone
  • The first app collects information on driving from the Android phone’s sensors
  • The second app delivers brief daily phone surveys over 28 days
    • Phone surveys are done 3 times per day (morning, afternoon, and evening), and when starting to use cannabis and before driving
• For the first 7 days of the daily data collection, participants provide a saliva sample just before driving, along with completing a brief phone survey
• After the 28 days of data collection, there is a follow-up visit (about 2 hours long), which is similar to the first assessment (interview, questionnaires)
• Providing feedback on the app’s features

Compensation is provided up to $465 for your participation.

There is no cost for you to participate in our research study.