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Facts - Books - News    U.S. Facts Of Law:

The BAC Legal Limit

The blood alcohol content is the amount of alcohol concentrated in the blood also known as the BAC.  It is measured in grams per deciliter.  Generally, a BAC of 0.08 g/dL or higher is over the legal limit for operating a motor vehicle (DUI).

In measuring if one is over the BAC legal limit there are many variables affecting the amount of alcohol in the blood.  These include body weight, body fat, gender, nutrition and time since the alcohol was consumed.  A single drink my put a 100 lb. individual over the limit or it may take five drinks for a person weighing well over 200 lb.

The actual blood alcohol content or concentration can be measured by taking a blood sample and testing it in a laboratory.  In the field, law enforcement officers usually rely on a device called a breathalyzer which estimates the BAC by measuring the alcohol in the breath.  While not exact, it is estimated that the blood alcohol concentration as measured by these devices is within 15% of the actual number but may vary widely from brand to brand.

To measure the amount of impairment in the field, law enforcement officers will also generally administer what is called a "roadside sobriety test" or "field sobriety test".  These tests may involve several smaller tests to determine impairment and may include counting backwards, walking a straight line toe to heel, touching your index finger to your nose with your eyes closed, standing on one leg, following a moving finger with your eyes or others.

While a BAC of 0.08 g/dL is the legal limit, one should not assume that driving with lesser amounts of alcohol in the blood is as safe as driving sober.  Tests have shown that drivers with a BAC of only 0.05 g/dL is at a four times greater risk of being in an accident.

As blood alcohol content approaches double the legal limit a person will generally have a severe loss of motor control, balance, speech, judgment, vision and may suffer from vomiting.  As the BAC approaches 0.25 g/dL one generally will suffer from anxiety, be unable to walk without help, become incoherent, feel little pain from injury and is at risk of death from asphyxiation.  When a BAC of 0.40 is approached one will generally be at risk of unconsciousness and possible coma.  The risk of death from asphyxiation is pronounced.  Even higher BAC levels usually result in death without medical intervention.


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BAC Legal Limit News
GN News

Wrongway Driver Who Struck Bicyclist In Midtown Had More Than Twice Legal Alc...
New York Daily News Wrong way driver who struck bicyclist in Midtown had more than twice legal alcohol limit New York Daily News A wrong way driver who slammed into a bicyclist near Penn Station had a blood alcohol level of .177 more than twice the legal limit, cops said Monday. He spent five hours drinking on a party boat. He was thoroughly intoxicated, Assistant District and more raquo

SP: Wayne County Woman Had BAC Nearly Four Times The Legal Limit CNYcentral...
CNYcentral.com SP: Wayne County woman had BAC nearly four times the legal limit CNYcentral.com State police say a Wayne County woman was drunk when she was pulled over for driving recklessly on an interstate highway. Troopers say Stacia A. Ward, and more raquo

DUI Driver With BAC Four Times Legal Limit Pleads Guilty In Fatal Crash NBC ...
NBC Southern California DUI Driver with BAC Four Times Legal Limit Pleads Guilty in Fatal Crash NBC Southern California A drunk driver with a blood alcohol level four times the legal limit the equivalent of approximately 17 drinks pleaded guilty to striking and killing a 21 year old driver coming home from work in Ramona last year. Paul Schenk pleaded guilty to

David Hasselhoffaposs Daughter Hayleyaposs BAC Was Well Over The Legal Limit ...
New York Daily News David Hasselhoff39s daughter Hayley39s BAC was well over the legal limit in DUI arrest New York Daily News The daughter of David Hasselhoff had a blood alcohol concentration well over the legal limit when she was busted for driving under the influence last month. Hayley Hasselhoff registered a .14 BAC during her May 13 arrest, TMZ reported, which is nearly Nearly Double Legal Limit in DUITMZ.com all 11 news articles raquo

Rep. Victoria Neave Had Blood Alcohol Level Almost Twice Legal Limit Dallas...
Dallas News Rep. Victoria Neave had blood alcohol level almost twice legal limit Dallas News Dallas Rep. Victoria Neave39s blood alcohol level was nearly double the legal limit after she was arrested on suspicion of driving while intoxicated Court filing: State Rep. Neave had BAC of .15 after DWI arrest WFAA all 3 news articles raquo

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Facts of Law - DUI DWI and Drunk Driving BAC Legal Limit