Pontiac 1998 Grand Am Owner's Manual page 161

It's the amount of alcohol that counts. For example, if
the same person drank three double martinis (3 ounces
or 90 m l 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.
There is a gender difference,
too.
Women generally have
a lower relative percentage of body water than men.
Since alcohol is carried in body water, this means that a
woman
generally will reach a higher BAC level than a
man of
her same body weight when each has the same
number of drinks.
The law
in many
U.S.
states
sets
the legal limit at
a
BAC
of 0.10
percent.
In a growing number of U.S. states, and
throughout Canada, the limit is 0.08
percent.
In
some
other countries, it's even lower. The BAC limit for
all
commercial drivers
in
the United States is 0.04 percent.
The BAC will be over 0.10 percent after three to six
drinks (in one hour).
O f course, as we've seen, it
depends on how much alcohol is i n
the
d r i n k s ,
and how
quickly the person
drinks
them.
But the ability to drive is affected well below a BAC of
0.10 percent. Research shows that the driving skills of
many people are impaired at a BAC approaching
0.05 percent, and that the effects are worse at night.
All
drivers are impaired at BAC levels above 0.05 percent.
Statistics show that the chance of being in a collision
increases sharply for drivers who have a BAC of
0.05 percent or above. A driver with a BAC level of
0.06 percent has doubled his or her chance of having a
collision. At
a BAC level of 0.10 percent, the chance of
this driver having a collision is 12 times greater; at
a
level of 0.15 percent, the chance is 25 times greater!
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