Which BAC range is presumed not under the influence?

Which BAC range is presumed not under the influence?

• A. 0.05-0.08
• B. <0.05
• C. >0.08
• D. 0.00

Answer: (B)

Presumption of impairment hinges on BAC thresholds. In many DUI rules, a BAC under 0.05 is presumed not to be under the influence, while impairment becomes more likely as BAC rises toward and above 0.08. Therefore, the BAC range presumed not to be under the influence is anything below 0.05, i.e., less than 0.05. The other ranges indicate possible impairment (0.05–0.08) or clear impairment (0.08+), and 0.00 is not a range but a zero reading; the common exam focus is the threshold below 0.05.

Presumption of impairment hinges on BAC thresholds. In many DUI rules, a BAC under 0.05 is presumed not to be under the influence, while impairment becomes more likely as BAC rises toward and above 0.08. Therefore, the BAC range presumed not to be under the influence is anything below 0.05, i.e., less than 0.05. The other ranges indicate possible impairment (0.05–0.08) or clear impairment (0.08+), and 0.00 is not a range but a zero reading; the common exam focus is the threshold below 0.05.