Cannabis edibles and alcohol together produced stronger driving impairment than either substance alone, while standard field ...

In a recent blog post, I explored data proving how cannabis users’ sense that they were ready to drive safely often occurred sooner than driving impairment waned (see “Self-Perception Doesn’t Predict ...

Most of us were taught to think of alcohol in simple terms: moderation is fine, excess is the problem. But the deeper I’ve gone into the science through years of client work, reviewing data from ...

As cannabis becomes the third most commonly used substance in the United States, following nicotine and alcohol, concerns about its impact on driving safety are rising. With 4/20, also known as ...