Chevrolet Silverado 2005 Spezifikationen PDF herunterladen (Seite 293)

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Many adults — by some estimates, nearly half the adult

population — choose never to drink alcohol, so they

never drive after drinking. For persons under 21,

it is against the law in every U.S. state to drink alcohol.

There are good medical, psychological and

developmental reasons for these laws.

The obvious way to eliminate the leading highway

safety problem is for people never to drink alcohol and

then drive. But what if people do? How much is “too

much” if someone plans to drive? It is a lot less

than many might think. Although it depends on each

person and situation, here is some general information

on the problem.

The Blood Alcohol Concentration (BAC) of someone

who is drinking depends upon four things:

• The amount of alcohol consumed

• The drinker’s body weight

• The amount of food that is consumed before and

during drinking

• The length of time it has taken the drinker to

consume the alcohol

According to the American Medical Association, a 180 lb

(82 kg) person who drinks three 12 ounce (355 ml)

bottles of beer in an hour will end up with a BAC

of about 0.06 percent. The person would reach the

same BAC by drinking three 4 ounce (120 ml) glasses

of wine or three mixed drinks if each had 1-1/2 ounces

(45 ml) of liquors like whiskey, gin, or vodka.

It is the amount of alcohol that counts. For example, if

the same person drank three double martinis (3 ounces

or 90 ml of liquor each) within an hour, the person’s

BAC would be close to 0.12 percent. A person

who consumes food just before or during drinking will

have a somewhat lower BAC level.

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