DUI - What is the Legal Limit for Blood Alcohol Content (B.A.C.)?

If you are over the age of 21, the presumptive legal limit is .05 for a DWAI (Driving While Ability Impaired) in Colorado. If your B.A.C is .08 and above you are presumptively DUI (Driving Under the Influence). If you are under the legal drinking age of 21, the legal limit is .02. For those with a Commercial Driver's License, the law is a little different. The legal limit while driving a commercial vehicle is .04, and could result in the loss of a license for a year on the first offense, or three years if carrying a hazardous material. If a CDL driver is driving his personal vehicle while under the influence, he may still receive a CDL disqualification for one year for a first offense, or a lifetime disqualification for a second offense.

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