Boulder is not alone in sometimes using eyelid tremor as one of the “roadside maneuvers.”  These voluntary tests are intended to identify impaired drivers. Part of the standard police roadside gymnastics to identify recent THC/marijuana use is to claim to observe “eyelid tremor.” In a study first posted on-line in February, 2024, that belief is called into serious doubt. The study, largely Colorado based including significant involvement from the University of Colorado and Anschutz Medical Center The strong local research participation ties are spelled out in the... Read More

  Driving and THC.  OR Blood Drunk or Blood Stoned is a dilemma in Boulder and elsewhere . First, a warning and some abbreviations. For the cannabinoid primarily responsible for getting us buzzed we look to  Delta-9 Tetrahydrocannabinol, I’ll use the shorthand “THC.” No longer a great abbreviation because Delta-8 and Delta-10 are becoming more a part of the language. “Cannabinoid” is simply a chemical found in the cannabis plant. Not every one of the 105+ cannabinoids are found in every plant, and percentages vary. Finally, this blog may take an extra bit of... Read More

When we talk about policy changes regarding legalization of marijuana, there are always people that immediately go into “reefer-madness-code-red-alert!” mode out of concern for driver safety. Telling them to take a hit and calm down goes over like a lead balloon. So instead, let’s talk facts and be reasonable. Marijuana is less dangerous than alcohol and, like alcohol, the deterrent effect of a DUI arrest applies. In the first large-scale controlled study of drug and alcohol crash risk by the National Highway Traffic Safety Administration, there is no significant increased crash risk associated... Read More