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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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The Latest: LSU Pledgeaposs BAC Level Was 6 Times Legal Limit Fox News
WWL The Latest: LSU pledge39s BAC level was 6 times legal limit Fox News A coroner says a Louisiana State University fraternity pledge39s blood alcohol content level was more than six times the legal limit for driving at the time of his death last month. East Baton Rouge Parish Coroner Beau Clark said Wednesday that 18 year LSU pledge had .495 BAC at time of death frat members arrestedWWL Frat Pledge Had BAC of 0.495 When He Died. Now 10 ArrestedNewser All ten suspects in hazing death surrender WednesdayWBRZ TIME all 157 news articles raquo

Middletown Police: Womanaposs Blood Alcohol Level Was 4.75 Times Legal Limit ...
Hartford Courant Middletown Police: Woman39s Blood Alcohol Level Was 4.75 Times Legal Limit Hartford Courant A driver who had an unusually high amount of alcohol in her blood after a collision outside a high school in Middletown last week will appear in court this month on drunken driving charges, police said. With a blood alcohol content of .38 percent

Macklemore Car Crash Other Driver Absolutely Bombed According To Cops TMZ.com
TMZ.com Macklemore Car Crash Other Driver Absolutely Bombed According to Cops TMZ.com The guy who collided head on with Macklemore had a blood alcohol level more than twice the legal limit TMZ has learned. Jake Pitcher39s BAC was .19 according to police docs and that was nearly 2 hours after the accident Pitcher was charged last

Driver Who Hit Geddes Street Pedestrian Had BAC Twice The Legal Limit, Record...
Syracuse.com Driver who hit Geddes Street pedestrian had BAC twice the legal limit, records show Syracuse.com SYRACUSE, N.Y. A man charged for a hit and run that left a pedestrian in critical condition had a blood alcohol concentration twice the legal limit. Rayshawn L. Stackhouse, 22, of Syracuse, was driving with a BAC of .16 percent when he struck a

BOE Employee Arrested For DUI Huntington Herald Dispatch
Huntington Herald Dispatch BOE employee arrested for DUI Huntington Herald Dispatch Baumgartner took Harper to the Wayne County Sheriff39s Department where her BAC test results were nearly three times the legal limit of 0.08. She was later taken to Western Regional Jail. Harper is listed as an employee in finance on the board39s central

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