BAC in text means by any chance.
bin
No. The BAC is affected by drinking too much.
It means you had too much alcohol in your blood when it was tested and you will likely lose your drivers license.
Blood Alcohol concentration
Drivers with a BAC of .016 (twice the legal limit) account for at least half of all alcohol-related traffic fatalities.
Factors which affect blood alcohol concentration (BAC) are the metabolism of the person, their general health, how much they have had to eat and how much they have had to drink, amongst others. The rate at which alcohol is metabolized is the same for virtually everyone regardless of their height, weight, sex, race or other such characteristics. Alcohol is metabolized at the rate of about .015 of BAC every hour. Thus, for example, a person with a very high BAC of .15 will have no measurable alcohol in the bloodstream after ten hours (.15 divided by .015 = 10).
by any chance
'bac' is the abbreviation of Baccalaureat, the exam taken by French students doing their final grade in high school.
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.015
It means exams or is sometimes specified to the baccalaureate.