CBD and driving: can you drive after taking the oil?
CBD is not prohibited while driving, but THC is. What are the consequences under Article 87 of the Code of Offenses and Article 178a of the Penal Code, how does testing during a traffic stop look like, and what is not mentioned on the label.
You use CBD and wonder if you can get behind the wheel. The legal answer is short: cannabidiol itself is not a controlled substance in Poland, and no regulation prohibits driving after using it. The problem lies elsewhere. A significant portion of products sold as CBD oil also contains THC, and tetrahydrocannabinols are listed in the official catalog of substances that act similarly to alcohol. The detection of THC in a driver triggers liability in two very different scenarios: once as an offense, and once as a crime. Below you will find both scenarios with legal bases, the course of testing during a traffic stop, and what the label of THC-containing oil does not say. You will also see what was actually measured in studies on driving after cannabis, as results are often summarized online in a way that contradicts the findings.
KEY INFORMATION
• CBD is not a controlled substance in Poland; THC is.
• Driving under the influence of THC is an offense under Article 87 § 1 of the Code of Offenses, with a fine starting from 2500 PLN and a driving ban.
• Driving while impaired by THC is a crime under Article 178a § 1 of the Penal Code, with a penalty of up to 3 years in prison.
• Of the 25 CBD products tested in the USA, three exceeded the local limit of 0.3% THC (Gurley et al., 2020).
What does Polish law say about CBD while driving?
Cannabidiol is not a controlled substance and does not appear on any list concerning drivers. The ban applies to THC. The Minister of Health's regulation from July 16, 2014, explicitly lists tetrahydrocannabinols among substances that act similarly to alcohol (Dz.U. 2014 poz. 948, § 1 point 4). If the test shows THC, the law recognizes two separate levels of liability.
| Stan kierowcy | Podstawa | Qualification | Sankcja |
|---|---|---|---|
| After using a substance that acts similarly to alcohol | art. 87 § 1 i § 3 k.w. | wykroczenie | arrest or a fine of at least 2500 PLN, mandatory driving ban |
| Under the influence of a psychoactive substance | art. 178a § 1 k.k., art. 43a § 2 k.k. | crime | imprisonment for up to 3 years and a financial penalty of at least 5000 PLN |
You can check the wording of both provisions in the consolidated texts: Code of Offenses, Journal of Laws 2025 item 734 and Kodeks karny, Dz.U. 2025 poz. 383. The distinction between them is not a formality, as it separates an offense from a crime, and in CBD guides, it often disappears: they describe only Article 178a and state a penalty of up to 2 years, while the provision mentions 3 years.
What is not in Polish law, but what readers usually look for first: the concentration threshold. No act specifies the THC value above which the act becomes a crime and below which it remains an offense. The 2014 regulation only provides the detection limits of the laboratory method, meaning the levels at which the result can be reliably measured. This is not the same as the threshold of liability and these numbers should not be interpreted that way.
Separately, it is worth organizing the value that appears most frequently in texts about CBD. The threshold of 0.3% THC applies to the plant, not the content in the finished oil, and is calculated as the sum of delta-9-THC and THCA. The statement "full spectrum oil can contain up to 0.3% THC" thus describes the accepted industry practice, not the statutory limit for the product. For food made from hemp seeds, completely different limits apply, expressed in milligrams per kilogram.
Does CBD impair driving?
In a study with real driving on public roads, cannabis with a CBD predominance did not worsen driving compared to placebo, while variants containing THC did worsen it in the first hour. However, the results pertain to vaporization of the flower, not sublingual oil, and the authors themselves caution that the confidence interval for the CBD variant does not rule out clinically significant impairment.
This refers to a trial published in the journal JAMA (Arkell i in., 2020). It involved 26 healthy individuals who occasionally used cannabis, with 22 completing a set of eight drives. Each participant went through four vaporization variants of 13.75 mg THC or CBD, and the standard deviation of lane position was measured over a hundred-kilometer route. In the window from 40 to 100 minutes after vaporization, the deviation increased by 2.33 cm (95% CI 0.80 to 3.86) after the THC-dominant flower and by 2.83 cm (95% CI 1.28 to 4.39) after the variant with equal amounts of THC and CBD, while the variant with CBD predominance did not differ from placebo. In the window from 240 to 300 minutes, none of these differences were statistically significant. Sixteen out of 188 drives were interrupted for safety reasons.
The second conclusion from the same research group is more important for drivers than the first: CBD does not protect against the effects of THC. In a simulator trial, a cannabis product containing equal amounts of THC and CBD proved to be no less impairing than a product with just THC, and in some cognitive tasks, it performed worse; the concentration of THC in the plasma was higher after it (Arkell i in., 2019, 14 participants). The belief that adding CBD "balances" THC has no support in this data.
Caution in the opposite direction is also warranted. Both studies measured inhalation of cannabis, not oral intake of oil, so directly transferring conclusions would be an overreach. Regarding CBD, the European Food Safety Authority stated in 2026 that there is still insufficient data on neurological and psychiatric safety to assess it (EFSA, 2026). If you feel drowsy after your dose, do not drive, regardless of what the measurement showed on twenty-six volunteers in the laboratory.
What type of extract should you choose if you drive?
From the perspective of testing for THC, what matters is not the concentration of CBD on the label, but the type of extract and the actual THC content confirmed by laboratory testing of the batch. A 10% isolate oil and a 10% full spectrum oil have the same number on the packaging but completely different consequences for the driver.
| Type of extract | Co deklaruje producent | What does it mean behind the wheel |
|---|---|---|
| Isolate | exclusively CBD, usually with a purity of 99% or higher | THC is not listed in the declared composition, so the risk is the lowest |
| Broad spectrum | inne kannabinoidy i terpeny, THC opisane jako niewykryte | undetected means below the method's limit of detection, not zero |
| Full spectrum | full plant profile including THC | THC is present by design, and its amount depends on the batch |
Here begins the real problem, as the manufacturer's declaration may not match the content. In an American study of 25 CBD products purchased at regular retail outlets, only three were within 20% of the declared amount, fifteen had significantly less CBD, two had more than half more, and three exceeded the local limit of 0.3% THC; four vaporization products additionally contained synthetic cannabinoids (Gurley i in., 2020). The authors state outright that products exceeding the THC limit could cost consumers their jobs after a failed test.
The European market shows similar results. An analysis of fourteen CBD oils available in EU countries found that nine of them had CBD content significantly deviating from the declared amount (Pavlovic i in., 2018). Both samples are small and date back a few years, so they do not describe the entire current market. However, they are sufficient to justify one practical rule: for drivers, the result of testing a specific batch is binding, not the category name on the box.
What does THC testing look like during a roadside check?
The basis is Article 129j of the Road Traffic Law. The test is first conducted using a method that does not require a laboratory, namely a screening test, and blood or urine is collected when the subject refuses, when their condition prevents screening, or as a follow-up to such a test. The regulation also allows for testing a driver without their consent, after informing them of this.
A screening test involves non-invasive collection of a saliva sample and placing it in a device that operates using an immunological method. Laboratory analysis looks different: blood and urine are tested using gas or liquid chromatography coupled with mass spectrometry, and the regulation provides limits of detection for them. For blood, it is 1 ng/ml of delta-9-THC, for urine 20 ng/ml of its metabolite, namely 11-nor-9-carboxy-delta-9-THC.
Two things are worth noting. First, the regulation does not specify any concentration threshold for saliva; saliva is only a material for screening tests, so the repeated threshold values for saliva circulating online have no basis in this act. Second, the limit of detection is a parameter of the measurement method. A result above it means that the substance has been detected, not that the qualification of the act has been automatically determined.
If you are using a CBD product, keep the laboratory test result of your batch along with the packaging. It is not a document that exempts you and does not replace a blood test, but it describes what you are actually taking and can be useful in proceedings. We have gathered more about the tests themselves and detection times in an article about CBD a testach narkotykowych, and what documents a patient treated with cannabis carries is described in a separate text about kontroli policyjnej a medycznej marihuanie.
What to do before you get behind the wheel after taking CBD?
The rules boil down to four decisions, none of which concern the number of milligrams. All relate to what you take and what you know about it.
- Check the type of extract, not just the CBD concentration on the label, and ask the seller for the batch test result if it is not provided.
- If you are subject to routine testing at work or drive professionally, choose products without THC in the composition and avoid full-spectrum variants.
- Do not assume that the legality of the product means no risk behind the wheel; the law reacts to the presence of THC in the body, not to the status of the store where you bought the oil.
- If you feel drowsy or slowed down after your dose, postpone driving, as you are responsible for the consequences regardless of the test result.
Finally, a number that organizes the scale of the entire discussion. The European Food Safety Authority established in 2026 a temporary safe dose of CBD at 0.0275 mg per kilogram of body weight per day, which is about 2 mg per day for a person weighing 70 kg, and noted that this applies only to supplements with a CBD purity of at least 98% and without nanoparticles. The same document states that the safety of CBD cannot be established in individuals under 25 years of age, in pregnant and breastfeeding women, and in individuals taking medications. We explain how cannabidiol differs from intoxicating substances in the text about this, is CBD non-psychoactive.
Frequently Asked Questions
Is CBD legal for drivers in Poland?
Yes. Cannabidiol is not a controlled substance, and no regulation prohibits driving after using it. The restriction applies to THC, which the Minister of Health's regulation from 2014 lists among substances that act similarly to alcohol. Therefore, the legal risk arises from the THC content in the product, not from CBD itself.
Does CBD oil impair driving?
This is unknown for the oil, as studies on driving involved vaporization. In a road trial published in JAMA, the CBD-dominant strain did not worsen driving compared to placebo, but the authors cautioned that the confidence interval does not rule out clinically significant impairment (Arkell et al., 2020).
Does CBD protect against the effects of THC while driving?
No. In a simulator study, a strain with equal amounts of THC and CBD was not less impairing than a strain with only THC, and in some cognitive tasks, it performed worse; THC concentration in plasma was higher after it (Arkell et al., 2019). The addition of CBD does not counterbalance THC.
What does the test detect during a roadside check?
First, a screening test using saliva, with an immunological method. Blood and urine are tested in the laboratory when the driver refuses the screening test or as a follow-up. The detection limits are 1 ng/ml delta-9-THC in blood and 20 ng/ml of its metabolite in urine. The regulation does not provide a threshold for saliva.
What are the consequences of driving after THC is detected?
It depends on the classification of the act. Driving under the influence is an offense under Article 87 § 1 of the Code of Offenses: arrest or a fine of at least 2500 PLN and a mandatory driving ban. Driving while impaired is a crime under Article 178a § 1 of the Penal Code: imprisonment for up to 3 years and a financial penalty of at least 5000 PLN.
This article is for informational and educational purposes only and does not constitute legal advice. The legal status described in the article is valid as of the date of publication, and regulations regarding cannabis may change. Before making any decisions, consult with a lawyer or current legal documents.
Author: Michał Waluk · Opublikowano: 2026-06-02 · Aktualizacja: 2026-08-15
