It used to be that if you were stoned, you were charged with DUI. Some states now are reexamining this policy and determining limits for Delta-9 THC intoxication. For example, Colorado law has defined Delta-9 THC intoxication as being more than 5 nanograms per milliliter of blood. This amount is being called into question and is very meaningful for your defense. A recent study has found (confirming popular belief) that Delta-9 THC does not impair an individual anywhere near as much as alcohol does, and determining whether someone is actually "under the influence" may not be that clear. So, for now, a universal guideline for determining the state of an individual's impairment from marijuana is far from being set. As always, never drive under the influence of or after taking alcohol or drugs. If you have been arrested or charged with DUI for any substance and you live in Essex, Burlington, South Burlington, Winooski, Colchester, Williston or anywhere in the State of Vermont, call the Law Office of C Jordan Handy to discuss your case.