We want to learn more about how people are affected by cannabis in different ways. We will use a driving simulator to compare the driving of adults who use cannabis daily, sometimes, or do not use cannabis. Participants must sign a form saying that they have a safe way to get home after the visit.

People may be able to join if they are 25 to 55 years old, are healthy, use cannabis daily, sometimes, or do not use cannabis, drive a car or truck, have a driver's license, and health insurance.