The fatal flaws of Colorado’s infamous 5 ng THC permissible inference law are now coming to light. The 5 ng law firmly positioned Colorado with the weakest DUID laws in the nation. Colorado’s law was supposed to make it somewhat easier to convict a stoned driver of DUI if they tested at or above 5 ng/ml of THC in whole blood, while making it extremely difficult to convict a stoned driver who tested below that level.
There are three problems with this 5 ng/ml law: First, as we reported earlier, some labs report that over 70% of stoned drivers test below 5 ng/ml THC, in part because of the long delay between first contact with a law enforcement officer and the taking of a blood sample. Some may claim that those testing below 5 ng/ml can still be prosecuted under Colorado’s impairment statute, but that claim is misleading. Such drivers cannot be successfully prosecuted, because Colorado is one of 12 states that define DUI as being “substantially incapable of safely driving,” a charge that is profoundly difficult to prove in court, even by the most gifted prosecutor.
Second, a gifted defense attorney can readily overwhelm a less-experienced county prosecutor to defeat the 5 ng permissible inference level. For example, a Colorado jury recently found Melanie Bringer not guilty of DUI after she failed her roadside Standardized Field Sobriety Test (SFST) and a subsequent laboratory found 19 ng/ml of THC in her blood.
Third, most juries, judges, and prosecutors don’t understand the differences between alcohol impairment and drug impairment. To begin with, the symptoms are markedly different. Also, most believe that marijuana is like alcohol, and that there should be a magic number of Δ9THC in a driver’s blood that will prove they are too impaired to drive safely. There is no such magic number, and if there were, it would certainly be lower than the 5 ng/ml limit established by Colorado, Washington and Montana. It would be closer to the 2 ng/ml limit established by Ohio and Nevada.
Alcohol impairs physical abilities more than mental abilities, whereas drugs like marijuana impair mental abilities more than physical abilities. Researchers have found that current SFSTs that were designed to quantify alcohol impairment are only modestly successful in quantifying marijuana impairment (Downey et al., Psychopharmacology DOI 10.1007/s00213-012-2787-9). Since she failed her SFSTs, one must conclude that Brinegar was more than modestly impaired by marijuana, in spite of her jury’s decision.
The purpose of using the term “green labs” is not to be cute; the term conveys to the ill-informed that these exercises are based in science. They are not. Unfortunately, there are many ill-informed in Colorado, including the legislature that passed the disastrous 5 ng bill, and those who supported its passage. All are likely to be misled.
DUID Victim Voices seeks to educate the ill-informed and welcomes help from DUID victims who wish to counteract fear and ignorance with valid science in our quest to find justice for DUID victims and to reduce drugged driving.