Washington State’s Cannabis DUI Laws: What You Need to Know
Determining who is driving under the influence of cannabis can be challenging due to the drug’s lingering effects and individual tolerance levels. In Washington state, the laws surrounding cannabis DUI are complex, and law enforcement uses a variety of methods to determine impairment.
Under Washington state law, a driver can be found guilty of driving under the influence of intoxicating liquor, cannabis, or any drug if their blood alcohol concentration is 0.08% or higher, or if they have a THC concentration of 5.00 or higher within two hours of driving. For drivers under 21, the legal alcohol limit is 0.02%, and any THC concentration is considered driving under the influence.
Law enforcement officers use roadside sobriety tests and 12-step evaluations to determine impairment. They can also arrest drivers who appear too intoxicated to drive, regardless of their THC blood level. Additionally, drivers who are under the influence can be charged with DUI even if they are below the legal THC threshold.
Cannabis can impair a driver’s ability to safely operate a vehicle by affecting coordination, perception, and decision-making skills. The Washington State Liquor and Cannabis Board states that using cannabis can cause drowsiness, slow reaction time, and other side effects that can impair driving.
While the smell of cannabis alone is not enough to pull someone over or arrest them on suspicion of DUI in Washington state, law enforcement officers can still determine impairment based on other indicators, such as slow speech, confusion, or obvious paraphernalia. If a driver is pulled over due to their behavior on the road, and there are additional signs of cannabis usage, they may be subject to roadside testing.
The penalty for driving under the influence of cannabis in Washington state varies based on the circumstances, including prior offenses, level of impairment, and whether minors were in the vehicle. In general, drivers can face fines up to $5,000 and potentially have their license suspended.
It is essential for drivers to understand the laws surrounding cannabis use and driving in Washington state. If you are caught driving under the influence, it is crucial to seek legal representation to navigate the complex legal system and minimize the consequences.











