Match each driver classification on the left with its corresponding statutory legal Blood … — DMV Permit Practice Test

Match each driver classification on the left with its corresponding statutory legal Blood Alcohol Concentration (BAC) limit on the right.

Motorists under 21 years of ageZero tolerance limit ( $0.01\%$ to $0.02\%$ depending on jurisdiction)
Commercial motor vehicle operators $0.04\%$ legal BAC threshold
Adult non-commercial drivers (21 years of age or older) $0.08\%$ legal BAC threshold

Underage drivers correspond to the zero tolerance limit (

0.01\%

–

0.02\%

), commercial vehicle operators correspond to the

0.04\%

threshold, and adult non-commercial drivers correspond to the

0.08\%

threshold.

Statutory BAC limits vary strictly by driver age and vehicle operational class: underage motorists are subject to zero tolerance (

0.01\%

–

0.02\%

), commercial vehicle operators are capped at

0.04\%

, and adult non-commercial motorists have a standard limit of

0.08\%

Identify the statutory BAC threshold established under zero-tolerance rules for underage drivers.

Motorists under 21 years of age are governed by zero-tolerance statutes, setting the legal limit at

0.01\%

0.02\%

Zero-tolerance laws strictly prohibit any measurable alcohol in the system of underage drivers.

Identify the legal BAC threshold applied to commercial driver license (CDL) holders operating commercial vehicles.

Commercial vehicle drivers are held to a reduced statutory threshold of

0.04\%

BAC.

Because of the greater size and risk associated with commercial transport vehicles, safety standards enforce a lower impairment limit.

Identify the standard per se legal BAC limit for adult non-commercial vehicle drivers.

Adult non-commercial drivers aged 21 and older are subject to a legal BAC limit of

0.08\%

Operating a standard passenger vehicle at or above a BAC of

0.08\%

is per se illegal across all jurisdictions.

Statutory Blood Alcohol Concentration (BAC) Thresholds Across Driver Classes

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Question