
Driving under the influence of alcohol is a serious offense in Washington state, with penalties including jail time, fines, license suspension, and reputational damage. The legal blood alcohol concentration (BAC) limit for driving in Washington is currently 0.08%, with a lower limit of 0.02% for minors and 0.04% for commercial drivers. In 2024, a bill was proposed to lower the limit for adults from 0.08% to 0.05%, but it did not pass. This limit refers to the amount of alcohol in a person's bloodstream while driving and is used to determine impairment, with various factors influencing BAC levels.
| Characteristics | Values |
|---|---|
| Legal alcohol limit for DUI for adult drivers in non-commercial vehicles | 0.08% within two hours of driving |
| Legal alcohol limit for DUI for commercial drivers | 0.04% |
| Legal alcohol limit for DUI for minors | 0.02% |
| Legal alcohol limit for cannabis or marijuana in the blood | 5.00 ng/ml |
| Legal alcohol limit for cannabis or marijuana for commercial drivers | 0.04% |
| Legal alcohol sale hours | 6 a.m. to 2 a.m. |
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What You'll Learn
- The current legal limit is 0.08% BAC for non-commercial drivers over 21
- The limit for commercial drivers is 0.04% BAC
- Underage drivers under 21 have a limit of 0.02% BAC
- There is zero tolerance for underage drinking and driving
- DUI laws also apply to passengers in a vehicle with an open container of alcohol

The current legal limit is 0.08% BAC for non-commercial drivers over 21
In the state of Washington, it is illegal to drive or be in physical control of a motor vehicle while under the influence of intoxicating liquor. The current legal limit is 0.08% blood alcohol content (BAC) for non-commercial drivers over 21. This limit applies within two hours of driving, as the human body breaks down alcohol over time. A BAC level of 0.08% or higher within this period is considered evidence of impaired driving.
It is important to note that different BAC thresholds apply to drivers under 21 and commercial drivers. For underage drivers, the BAC limit is 0.02%, and they can be charged with "Minor Driving After Consuming Alcohol" or an underage DUI. Commercial drivers, on the other hand, have a lower BAC limit of 0.04% due to the added responsibility and danger associated with operating large commercial vehicles.
Driving under the influence of alcohol (DUI) is a serious offense in Washington and can lead to jail time, monetary fines, license suspension, and reputational damage. The state has strict blood alcohol concentration (BAC) limits, and law enforcement can prosecute individuals for a DUI based on chemical test results and evidence of driving or being in control of a vehicle.
While the number of drinks consumed is not the sole determinant of a driver's BAC, various factors can impact it, including body weight, rate of consumption, medication use, and the presence of food in the stomach. It is crucial for drivers to understand that there is no quick way to reduce BAC levels once alcohol has been consumed.
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The limit for commercial drivers is 0.04% BAC
In the state of Washington, driving under the influence of alcohol is a serious offence that can lead to jail time, fines, license suspension, and reputational damage. The legal blood alcohol concentration (BAC) limit for driving in Washington is 0.08%. However, this limit varies depending on the age and type of driver. For instance, the BAC limit for commercial drivers in Washington is 0.04%. This lower limit is due to the added responsibility and danger associated with operating a commercial vehicle. Commercial drivers typically operate large vehicles such as tractor-trailers, which require additional skills and licensure.
Commercial drivers with a commercial driver's license (CDL) must adhere to this lower BAC limit while operating their vehicles. The state of Washington recognises the increased danger posed by accidents involving large commercial vehicles and has therefore imposed a stricter limit for these drivers. This limit is in place to enhance road safety and reduce the risk of accidents caused by impaired driving.
The BAC limit for commercial drivers in Washington is significantly lower than the standard limit for adult drivers in non-commercial vehicles. This distinction highlights the heightened responsibility associated with operating commercial vehicles and the need to maintain a higher level of sobriety while doing so. The 0.04% BAC limit for commercial drivers is a crucial safety measure that helps ensure that those operating these large and potentially dangerous vehicles are not impaired by alcohol.
It is important to note that the BAC level can be influenced by various factors, including body weight, rate of consumption, and the presence of food in the stomach. These variables can impact the rate at which alcohol is absorbed and metabolised by the body. Therefore, commercial drivers must be cautious and aware of how these factors can affect their BAC level when consuming alcohol. Understanding the unique factors that influence BAC can help commercial drivers make informed decisions and ensure they remain within the legal limit.
In conclusion, the state of Washington has implemented a strict 0.04% BAC limit for commercial drivers to prioritise road safety and mitigate the risks associated with impaired driving in large commercial vehicles. This limit is an essential consideration for commercial drivers, who must remain vigilant about their alcohol consumption to ensure they comply with the law and maintain the safety of themselves and others on the road.
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Underage drivers under 21 have a limit of 0.02% BAC
In the state of Washington, driving under the influence of alcohol is a serious offence that can lead to jail time, fines, license suspension, and reputational damage. Washington has a legal limit for intoxication, set at a blood alcohol concentration (BAC) of 0.08%. However, this limit varies for drivers under the age of 21. Underage drivers under 21 have a stricter limit of 0.02% BAC. This means that any underage driver with a BAC of 0.02% or higher is considered to be driving under the influence and can face legal consequences, including a misdemeanor DUI charge.
In Washington, it is illegal for anyone under 21 to consume alcohol. The state has a zero-tolerance policy for underage drinking and driving, and takes this offence very seriously. The BAC limit for underage drivers is much lower than the general limit to deter minors from drinking and driving, as they are considered to be more vulnerable due to their younger age. This limit is enforced to protect the safety of underage individuals and to help prevent accidents and fatalities caused by impaired driving.
The BAC limit for underage drivers in Washington is a specific and stringent regulation that aims to prevent underage drinking and driving. Even a small amount of alcohol can impair a person's ability to drive safely, and this limit is set to ensure that underage individuals do not put themselves or others at risk. Underage drivers may face harsh penalties if found to be driving with a BAC above the legal limit, including jail time, fines, and license suspension, which can have a significant impact on their future opportunities.
It is important to note that the BAC level is not the only factor considered when determining if a driver is impaired. Other factors, such as body weight, rate of consumption, medication use, and the presence of food in the stomach, can also influence the level of impairment. However, the BAC limit provides a clear and measurable standard to help law enforcement officials make informed decisions and keep the roads safe for everyone.
While the BAC limit for underage drivers in Washington is currently set at 0.02%, there have been recent discussions and proposals to lower the legal limit for all drivers in the state. In 2024, a bill was proposed to reduce the maximum allowable BAC for drivers from 0.08% to 0.05%. This proposal was driven by the increasing number of car crash deaths in Washington, with a focus on reducing impaired driving incidents. While the bill did not pass, it highlights the state's ongoing efforts to enhance road safety and address the issue of drunk driving.
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There is zero tolerance for underage drinking and driving
In Washington, driving under the influence of alcohol is a serious offence that can lead to jail time, fines, licence suspension, and reputational damage. The state has a legal limit for intoxication, set at a blood alcohol concentration (BAC) of 0.08% or a blood concentration of 5.00 ng/ml of THC. For commercial drivers, the legal limit is 0.04% BAC.
It is important to note that a person can be charged with a DUI even if a breath test reading is under the legal limit if the arresting officer has reason to believe that the individual's ability to drive was impaired by alcohol. This means that even if an underage individual's BAC is below 0.02%, they can still be charged with a DUI if their behaviour or driving suggests impairment.
The amount of alcohol in a driver's system directly affects their coordination and ability to operate a vehicle. While there is no specific number of drinks that determines a driver's legal limit, their level of impairment is measured by their BAC. Various factors can influence an individual's BAC level, including body weight, rate and period of consumption, medication use, and whether food was consumed with alcohol.
Washington has strict DUI laws and specially trained police officers to watch for impaired drivers. The state imposes stiff penalties for DUIs, and those convicted are required to undergo an assessment for substance abuse treatment if necessary.
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DUI laws also apply to passengers in a vehicle with an open container of alcohol
In the state of Washington, it is illegal to drive or be in actual physical control of a motor vehicle while under the influence of alcohol or other intoxicating substances. The legal blood alcohol concentration (BAC) limit for driving in Washington is currently 0.08%, and this applies to drivers over the age of 21 operating non-commercial vehicles. This limit is lower for commercial drivers, at 0.04%, and for minors, at 0.02%.
While the state's legal limit for BAC remains at 0.08%, there have been recent efforts to lower this threshold to 0.05%. In 2024, a bill was proposed to reduce the maximum allowable BAC for drivers, but it did not receive a vote. This proposal was supported by activists and some lawmakers, who cited the increasing number of car crash deaths in the state, with a significant proportion involving impaired drivers.
Washington has strict DUI laws, and driving under the influence is considered a serious offence. DUI laws apply not only to the driver but also to passengers in a vehicle with an open container of alcohol. An open container refers to any alcohol container with a broken seal or one that has been partially consumed. Passengers in possession of an open container can face legal consequences, including fines, community service, or even jail time if they supply alcohol to a minor. To comply with the law, alcohol should be stored in the trunk or glovebox of a vehicle.
It is important to note that DUI laws in Washington also consider the presence of drugs, including cannabis and prescription medications, which can have intoxicating effects. Being in "actual physical control" of a vehicle refers to having the capability to operate it, such as having the keys in the ignition, even if the vehicle is not in motion. Law enforcement may arrest a driver on suspicion of DUI if they have probable cause, and chemical tests, such as breath or blood tests, are used to verify BAC levels.
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Frequently asked questions
The legal alcohol limit in Washington state for adults driving non-commercial vehicles is a blood alcohol content (BAC) of 0.08%.
The DUI limit for minors in Washington state is a BAC of 0.02%.
The legal alcohol limit for commercial drivers in Washington state is a BAC of 0.04%.
Yes, there have been efforts to lower the legal alcohol limit for drivers in Washington state from 0.08% to 0.05%, but these have not been successful so far.











































