Which BAC range requires further evaluation of intoxication?

Which BAC range requires further evaluation of intoxication?

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

Answer: (A)

Impairment can occur before reaching a definitive legal threshold, so there’s a middle range where a driver may be impaired but isn’t automatically treated as intoxicated by a per‑se standard. In this zone, BAC alone isn’t enough to decide intoxication, so officers must rely on signs of impairment and perform standardized field sobriety tests to determine if the driver is actually intoxicated. The idea is that the BAC reading in this range needs corroboration from behavior and performance. Beyond that mid-range, a BAC reading above the per‑se limit means intoxication is presumed by law, so you still assess behavior but the reading itself supports intoxication. Below the mid-range, impairment is less likely, so extensive evaluation is less often required.

Impairment can occur before reaching a definitive legal threshold, so there’s a middle range where a driver may be impaired but isn’t automatically treated as intoxicated by a per‑se standard. In this zone, BAC alone isn’t enough to decide intoxication, so officers must rely on signs of impairment and perform standardized field sobriety tests to determine if the driver is actually intoxicated. The idea is that the BAC reading in this range needs corroboration from behavior and performance.

Beyond that mid-range, a BAC reading above the per‑se limit means intoxication is presumed by law, so you still assess behavior but the reading itself supports intoxication. Below the mid-range, impairment is less likely, so extensive evaluation is less often required.