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Navigating Marijuana DUI Charges in California

Feb 20, 2025 | Video Transcripts

California’s legalization of marijuana has brought significant changes, including an increase in DUI arrests involving cannabis. While these charges can feel daunting, marijuana DUIs are often more defensible than alcohol-related DUIs due to unique legal and scientific challenges. Here’s what you need to know about marijuana DUIs in California and how Strongest Defense can help.

What Makes Marijuana DUIs Different from Alcohol DUIs?

One of the biggest distinctions between marijuana and alcohol DUIs is the difficulty in proving impairment. For alcohol-related DUIs, a blood alcohol concentration (BAC) of 0.08% or higher is the legal standard for impairment. Marijuana, however, lacks a similar universally accepted threshold.

Marijuana metabolites can remain in your system for up to 30 days. This means that even if you consumed cannabis weeks ago, a urine or blood test could still show a positive result. However, this does not necessarily indicate impairment at the time of driving.

In contrast to alcohol cases, marijuana DUIs require prosecutors to prove that the driver was unable to operate a vehicle safely. This is a much harder standard to meet, given the lack of reliable tests and the variability in how marijuana affects individuals.

How Are Marijuana DUI Cases Tested?

When someone is arrested for a marijuana DUI, law enforcement typically relies on blood or urine tests to detect cannabis metabolites. However, these tests present significant challenges:

  • Urine Tests: Marijuana can be detected in urine for up to a month after use, making it impossible to determine whether someone was impaired at the time of driving.
  • Blood Tests: While slightly more reliable, blood tests still fail to establish a clear connection between the amount of marijuana in a person’s system and their level of impairment.

The only field test that might indicate marijuana impairment is called the non-convergence test. This involves holding a finger close to the driver’s eyes and observing whether their eyes fail to cross properly. While this test can sometimes suggest impairment, it is not definitive.

Do Marijuana DUIs Have Different Penalties?

Yes, marijuana DUIs differ from alcohol DUIs in terms of penalties and administrative actions. For alcohol DUIs, the Department of Motor Vehicles (DMV) can impose penalties like license suspension as part of the administrative process, even before a court conviction.

In marijuana DUI cases, license penalties are only imposed if you are convicted in court. However, the penalties for a marijuana DUI conviction are similar to those for alcohol DUIs and may include:

  • Fines and court fees
  • Mandatory attendance in an alcohol education program (ironically, there are no cannabis-specific programs)
  • Jail time
  • A criminal record that can impact future opportunities

Are Marijuana DUIs Easier to Defend?

Yes, marijuana DUIs are generally easier to defend than alcohol DUIs because of the prosecution’s burden to prove impairment. Strongest Defense uses several strategies to challenge these charges, including:

  • Questioning Test Results: We emphasize the limitations of urine and blood tests, which cannot reliably determine impairment at the time of driving.
  • Highlighting Individual Factors: Marijuana affects each person differently, making it harder for prosecutors to establish a clear link between cannabis use and unsafe driving.
  • Examining Police Procedures: Improperly conducted field tests or procedural errors can weaken the prosecution’s case.

Should You Fight a Marijuana DUI Charge?

Absolutely. The unique challenges of proving marijuana impairment give you a strong chance to reduce or dismiss the charges. At Strongest Defense, we have a proven track record of success in fighting marijuana DUIs and ensuring that our clients’ rights are protected.

Take the Next Step

If you’ve been arrested for a marijuana DUI in California, don’t face the legal system alone. Strongest Defense is here to guide you through the process, challenge the evidence against you, and fight for the best possible outcome.

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