CBD & Driving – New Evidence

In a previous article – Can you drive while using CBD supplements?, we discussed the existing evidence which suggested that CBD does not impair driving ability.

On the 30th of May, a new study published in the Journal of Psychopharmacology added some fresh data to this consensus. Read on to learn more!


What Are Randomised Control Trials?


This study was a high-quality, randomised, double-blind, crossover study. These particular ‘gold-standard’ types of study are lacking in the world of CBD and cannabinoids.

Randomised control trials (RCTs) involve randomly allocating participants of a study into two separate groups. One group is given a substance (in this case CBD), and the other group is given a placebo.

A placebo is a pill that contains no biologically active substances. But the participants are told that this pill contains the active ingredient.

As placebo pills can have tangible effects on their own, it’s important to test if the substance is having effects that are different from what would naturally come from a placebo.

RCTs are designed specifically to ensure that unintended factors do not influence the study results. If a researcher was to allocate the participants at will, there is a risk of selection bias. Meaning that each group may be unknowingly selected due to an underlying bias. This could lead to an unfair comparison of the effects of a substance between the two groups.

Double-blind means that neither the participant nor the researchers know who is being given what until the study is over. This can eliminate the chance of a researcher inaccurately evaluating the results due to an underlying bias. Or even the chance of the researcher ‘tipping off’ participants.

The crossover element then involves switching over which group receives what. So the original placebo group would receive the CBD, and the original CBD group would receive the placebo. This is to see whether the same results are duplicated with each group. If not then there may be some unknown differences between the groups that influenced the results.


Effects of cannabidiol on simulated driving and cognitive performance: A dose-ranging randomised controlled trial



Now that you know the type of study that was conducted, let’s take a look at the design and the results.

This study by Danielle Mccartney et al., involved evaluating the participant’s driving performance against 3 separate doses of CBD – 30mg, 300mg, or 1500mg, and a placebo. With a randomised, double-blind, crossover design as discussed above.

The results demonstrated that no dose of CBD had a negative impact on driving ability when compared to placebo. And with this type of study, that’s pretty definitive.

So there you go, even a monster dose of 1500mg has no negative impact on driving ability. What we would like to know is, could any dose of CBD have a positive impact on driving ability? That would require another study, that we hope to see in the coming years!

We hope that this article has provided some good insight into RCTs, CBD, and driving ability. If you are interested in checking out our product range, click the button below to visit our online shop.