Marijuana-Impaired Driving
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What Should Washington Residents Know About Marijuana-Impaired Driving?

Washington state has legalized recreational marijuana, as have a growing number of other states around the country. Washington State’s Initiative 502 decriminalized recreational marijuana back in 2012, even though marijuana is an illegal substance at the federal level. While some may mistakenly believe that legalized marijuana use may mean a free-for-all in states like Washington, that’s not the case.

For example, in order to consume marijuana in the state, you have to be at least 21 years old. When you get your Washington driver’s license, you have to answer questions about the use of drugs and alcohol as well, and as with other states, impaired driving is something the state takes seriously.

That often leaves residents and visitors wondering what happens if you’re pulled over under suspicion of marijuana use or impairment. The following are some things to know about marijuana-impaired driving in Washington and elsewhere.

How Does Marijuana Affect Driving?

According to the National Institute on Drug Abuse, marijuana can significantly impact your coordination, judgment, and reaction time, all of which play a vital role in safe driving.

Some other facts based on data cited by the National Institute on Drug Abuse include:

  • Marijuana is the illegal drug most commonly found in the blood of drivers in vehicle crashes, including deadly ones
  • Two large-scale studies in Europe found that when drivers had THC in their blood, they were nearly twice as likely to be at fault for a deadly crash than drivers who didn’t use drugs or alcohol
  • Marijuana presents a challenge in terms of determining its role in crashes because it can be detected in body fluids for days or weeks after someone uses it
  • Analyzing many studies showed the risk of being in a crash went up significantly after using marijuana

In Washington, of the 503 fatal crashes reported in 2016, 105 were said to have been caused by drivers who tested positive for marijuana, according to the Washington Safety Transportation Commission.

According to the Insurance Information Institute, the number of people driving while apparently under the influence of marijuana went up significantly after the legalization of recreational pot.

The same is true in Colorado. One survey showed that almost 70% of marijuana users in Colorado said they’d driven stoned at least once in the past year.

How do Do Law Enforcement Officials Determine Someone is Under the Influence of Marijuana?Under the Influence of Marijuana

One of the biggest legal issues states like Washington are facing when it comes to driving under the influence of marijuana is how to determine and prove it’s happening.

With alcohol, there are blood and breath tests that can be administered quickly and easily. Since alcohol leaves the system fairly quickly, it’s simple to determine someone is driving under the influence and also to what extent.

This isn’t the case with marijuana

THC, which is a psychoactive ingredient, can stay in the system for days or weeks. In the state, if a law enforcement officer decides to arrest someone for drug impairment, a judge has to give the green light for a search warrant to do things like blood tests, and that can take hours.

Also, as was touched on, the presence of THC in these blood tests doesn’t mean someone is impaired. There is significant variance in how much impairment someone might experience due to the use of marijuana. The method of consumption and the type of marijuana are both factors that play a role.

There is no agreed-upon impairment limit for THC currently in Washington or throughout the nation.

Washington does have what’s called a per se limit on THC

That means that operating a vehicle with a blood THC concentration above that per se limit is illegal. Sometimes behavioral tests are used to determine if someone is under the influence of marijuana, but again, these aren’t always considered reliable.

So what does all this mean for drivers in Washington and elsewhere? First, even though marijuana may be legal in certain situations, that doesn’t mean it’s legal in all situations. It also means that driving under the influence of any substance, including marijuana, can be dangerous or deadly.

As far as the legal implications, there is a lot of variances here. If you are pulled over and deemed to have been under the influence of marijuana, you may face the same penalties as if you were driving under the influence of alcohol.

As with other states, Washington is trying to figure out how to standardize all of this and figuring out the way to deal with marijuana use in various situations.  THat all you need to know about Marijuana-Impaired Driving.

Article by

Alla Levin

Seattle business and lifestyle content creator who can’t get enough of business innovations, arts, not ordinary people and adventures.

About Author

Alla Levin

Hi, I’m Alla, a Seattle business and lifestyle content creator who can’t get enough of business innovations, arts, not ordinary people and adventures. My mission is to help you grow in your creativity, travel the world, and live life to the absolute fullest!


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