Driving and traveling

Plan ahead. Don't drive high.

Driving while impaired is illegal and unsafe

Getting high before you drive can get you arrested for a driving under the influence (DUI) charge. This is true even though marijuana use is legal for adults in Colorado.

  • Similar to alcohol, there’s an established impairment level for marijuana in Colorado.      

    • By law, drivers with 5 nanograms of delta-9 tetrahydrocannabinol (THC) per milliliter of whole blood can be prosecuted for DUI.

  • Even if marijuana is used medically, officers can arrest you for impaired driving.

  • No open containers:

    • Neither drivers nor passengers are allowed to open any marijuana packaging and use the product while in a vehicle.

    • You can be charged with a traffic offense if the marijuana product seal has been broken, some of the product has been consumed and there’s evidence that it was used in the car.

  • Check out the Colorado Department of Transportation’s “Uncomfortable High” campaign and read the frequently asked questions for more information on marijuana and driving in Colorado.


Be careful where you travel 

Keep it in Colorado.

  • Leaving the state with any marijuana product is against the law. 

  • You can’t bring marijuana to Denver International Airport or any other airport.

  • Not in federal parks or on federal land:

    • Since marijuana is still illegal under federal law, you can’t use it on federal land, including national parks and national forests. This includes ski slopes.

Read about the immediate health effects of marijuana and how it may impact your ability to drive.