Driving while impaired is illegal and unsafe. Getting high before you drive will get you arrested for a driving under the influence (DUI) charge. This is still true even though marijuana is legal for adults.
If you are high, you should not drive, bike or operate machinery. Marijuana use affects:25
Similar to alcohol, there is an established impairment level for marijuana in Colorado. By law, drivers with five 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 based on impaired driving behaviors.
It also is illegal have marijuana in the passenger area of a vehicle if the seal has been broken, some of the product has been consumed and there is evidence it was used in the car.10 mg or more of THC is likely to cause impairment. This impacts your ability to drive, bike, or perform other safety-sensitive activities.1
Check out the Colorado Department of Transportation’s “Drive High, Get a DUI” campaign and read the frequently asked questions for more information on marijuana and driving in Colorado.
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