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In the 1980s and '90s, a push to lower the legal blood alcohol content (BAC) limit for getting behind the wheel took the country by storm. Mothers Against Drunk Driving (MADD) was formed in 1980 ...
Drunk driving is the act of operating a motor vehicle with the operator's ability to do so impaired as a result of alcohol consumption, or with a blood alcohol level in excess of the legal limit. [1] For drivers 21 years or older, driving with a blood alcohol concentration (BAC) of 0.08% or higher is illegal.
Blood alcohol content (BAC), also called blood alcohol concentration or blood alcohol level, is a measurement of alcohol intoxication used for legal or medical purposes. [1] BAC is expressed as mass of alcohol per volume of blood. In US and many international publications, BAC levels are written as a percentage such as 0.08%, i.e. there is 0.8 ...
In 1983, Utah was the first state to lower its statewide blood alcohol content (BAC) limit for operating a vehicle to 0.08% from the standard 0.10%. On December 30, 2018, Utah became the first state to further lower its limit to 0.05% BAC. [34]
According to the National Institutes of Health, at least 91 countries have adopted the .05% BAC limit for driving, with 54 other nations using a standard ranging from .06% to .12%.
NHTSA reports that the following blood alcohol levels (BAC) in a driver will have the following predictable effects on his or her ability to drive safely: (1) A BAC of .02 will result in a "[d]ecline in visual functions (rapid tracking of a moving target), a decline in the ability to perform two tasks at the same time (divided attention)"; (2 ...
Calculating sensitivity (98.1%) and specificity (71.1%), which are independent of prevalence, if these are held constant but only 1% of drivers tested had BAC over 0.08%, the arrest accuracy using SFSTs would fall to 3.3% (due to a large number of false arrests) and the overall accuracy to 71.3%.
A driver testing 0.15 percent or higher above the legal limit of 0.08 percent faces more severe penalties for enhanced BAC. When under the age of 21, a driver in Texas must not test positive for any BAC and may be charged with DUI even if the amount tested is under 0.08 percent.