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Alcohol and Driving - Walk Test and Breathalyzer

Written by Inara Hasanali, M.A.  | Medically Reviewed by Dr. Sunil Shroff, MBBS, MS, FRCS (UK), D. Urol (Lond) on Dec 19, 2019
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Alcohol and Driving - Walk Test and Breathalyzer

Alcohol content in the blood is usually measured by blood levels and by far this is the most accurate. However for convenience other test methods maybe used including the

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  • Walk Test
  • Breathalyzer

Walk Test: In the walk test the suspect is asked to walk in a straight line since one of the initial effects of intoxication is lack of coordination and staggering. However with the advent of new technology sophisticated instruments such as breath analyzers are used to detect the BAC.

Breathalyzer: is an instrument that is used to measure the Blood Alcohol Content (BAC). This instrument has a few flaws and some of the factors, can give a false positive result. Blood alcohol level is by far the most accurate method of measuring the amount of alcohol consumed.

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Some people who drink believe that by using substances like breath mints, breath spray, mouthwash and onions they can fool the machine to show lower BAC. Although this may fool a person, it does not change the BAC, which will show up on the machine.

There are also a few legal provisions on the use of these instruments as various models have their own shortcomings. However hand held models can give a broad indication of the BAC.

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Comments

jay1313

CAN A PERSON DRIVE A VEHICLE- FOUR WHEEL WITH ALCOHOL INTAKE OF MORE THAN 0.9%. OR SAY 95 MGM LEVEL.. IS IT MEDICALLY POSSIBLE TO DRIVE A FOUR WHEELER FOR 40 KM WITH 0.95% OR 9.5 MG OF ALCOHOL

PaulFlessis

Even Dubai is quite strict for drunken driving. They take photos - from Police cameras and people get booked with hefty fines.

shivh

Can someone help me by telling me how much wine or beer or whisky can I drink which will keep me below the permissable levels under the Indian law of 30mg. i shall be grateful. Shiv Hazari

PaulFlessis

Better not drink mate. Why drink in the first place..?

Greatguru10

How does 30mg/100ml translate in terms of the amount of Alchohol that can be consumed by an individual and keep him within this safe limit. Will having a bottle of beer keep within this safe thresh hold. I know BAC depends on a lot of other factors...but I guess a safe limit can be arrived at in terms of bottles of beer.....or a CHOTA or a BADA peg.......Cheerio.

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