Marijuana and DUI

- Your behavioral and cognitive skills are impaired in a dose-dependent fashion as levels of marijuana increase in your blood.
- Evidence from both real and simulated driving studies shows that marijuana can affect in a negative way your perception of time and speed, your attentiveness as a driver and your ability to draw on information obtained from past experiences.
- These impairments are significantly increased when you combine marijuana with the use of alcohol.
- Studies have indicated that many drivers who test positive for marijuana also test positive for alcohol. This is a clear indication that drinking and drugged driving are related behaviors.
- Marijuana, like other drugs and alcohol, can make it harder for you to react to sounds and signals and judge distances on the road. For example, if you have smoked marijuana you may have trouble judging how long it will take your car to slow down when you hit the brakes. You may also struggle to coordinate braking and steering.
- The effects of marijuana on your driving may last up to 24 hours. Your choice to use marijuana at a party last night may result in an accident that happens today.