What is the legal limit for driving under the influence of marijuana (DUIM)?

In Washington, the legal limit for driving under the influence of marijuana (DUIM) is 5 nanograms per milliliter of blood. This is the same legal limit for all other drugs and alcohol. This legal limit was established by the Washington State Legislature in 2012 and is enforced by the police and prosecutors. Any amount of marijuana consumed by a driver can result in a DUI charge, but if a driver tests for 5 nanograms or more, the likelihood of being prosecuted for DUI is drastically higher. This limit is based on the scientific evidence that shows that if a person has 5 nanograms or more in their blood, they are impaired to the point of being dangerous behind the wheel. It is important to note that a DUI charge is based on the amount of THC in the driver’s bloodstream, not on their level of intoxication. Even if a driver feels sober, they can still be arrested and charged with DUI if they test for 5 nanograms or more. It is also important to note that each person’s ability to metabolize THC is different, so there is no set amount of marijuana that is safe to consume before driving. For this reason, it is always best to err on the side of caution and not drive after using marijuana.

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What is the legal limit for driving under the influence of marijuana (DUIM)?

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