Alcohol Breath Test Legal Limit
Since 2002, it has been illegal in all 50 U.S. states to drive with a blood alcohol concentration (BAC) that
is .08% or higher.
In short, the alcohol breath test legal limit is therefore .08% or higher.
Some Basic Info About Driving Under the Influence
A breath test is the most common way of testing for alcohol.
The results of this test can only reveal if the person being tested is under the influence of alcohol at the
time the breath sample is taken.
More specifically, alcohol is metabolized out of the body in a relatively short period of time.
Indeed, unless an individual is under the influence of alcohol at the time the breath test is taken, the test
may not detect alcohol use that occurred even a number of hours earlier.
Driving under the influence of alcohol, also known as "drunk driving," is defined as the act of operating a
motor vehicle (and sometimes even a bicycle) after having ingested ethanol alcohol to the extent that the person's
motor skills and mental abilities are impaired.
A second type of "driving under the influence" also pertains to operating a motor vehicle after having taken
More recently, however, a third type of "driving under the influence" has been identified, namely, driving under
the combined influence of alcohol and other drugs.
Interestingly, the drugs contributing to the impaired condition do not need to be illegal.
That is, these "other drugs" can be legal prescriptions or even over-the-counter remedies and treatments.
DWI and DUI Statutes
The various DWI or DUI statutes specify that it is illegal to drive with a blood alcohol level or concentration
(BAC) exceeding a certain value articulated in the statute.
BAC is most conveniently measured as a simple percent of alcohol in the blood by weight.
Conclusion: Alcohol Breath Test Legal Limit
Perhaps the most important information about the alcohol breath test legal limit is this: since
2002, it has been illegal in all 50 U.S. states to drive with a blood alcohol concentration (BAC) that is 08% or
Some states, additionally, include a lesser charge, usually known as "driving while impaired," with a target BAC
Finally, in all 50 states, drivers under the drinking age of 21 are considered to have committed a drunk driving
offense if they have a BAC of .01%or .02%.