BAC Chart
|
MALE BLOOD ALCOHOL CONCENTRATION GUIDE
|
|
Number of
Drinks Per Hour
|
PERCENT OF ALCOHOL IN BLOODSTREAM
|
|
|
BODY WEIGHT IN POUNDS
|
|
110
|
120
|
140
|
160
|
180
|
200
|
220
|
240
|
|
0
|
ONLY SAFE DRIVING LIMIT
|
|
1
|
.04
|
.03
|
.02
|
.02
|
.02
|
.02
|
.02
|
.02
|
Driving
Skills
IMPAIRED
|
|
2
|
.08
|
.06
|
.05
|
.05
|
.04
|
.04
|
.03
|
.03
|
|
3
|
.11
|
.09
|
.08
|
.07
|
.06
|
.06
|
.05
|
.05
|
|
4
|
.15
|
.12
|
.11
|
.09
|
.08
|
.08
|
.07
|
.06
|
|
5
|
.19
|
.16
|
.13
|
.12
|
.11
|
.09
|
.09
|
.08
|
LEGALLY DRUNK IN IOWA and most states
|
|
6
|
.23
|
.19
|
.16
|
.14
|
.13
|
.11
|
.10
|
.09
|
|
7
|
.26
|
.22
|
.19
|
.16
|
.15
|
.13
|
.12
|
.11
|
|
8
|
.30
|
.25
|
.21
|
.19
|
.17
|
.15
|
.14
|
.13
|
|
9
|
.34
|
.28
|
.24
|
.21
|
.19
|
.17
|
.15
|
.14
|
|
FEMALE BLOOD ALCOHOL CONCENTRATION GUIDE
|
|
Number of
Drinks Per Hour
|
PERCENT OF ALCOHOL IN BLOODSTREAM
|
|
|
BODY WEIGHT IN POUNDS
|
|
100
|
120
|
140
|
160
|
180
|
200
|
220
|
240
|
|
0
|
ONLY SAFE DRIVING LIMIT
|
|
1
|
.05
|
.04
|
.03
|
.03
|
.03
|
.02
|
.02
|
.02
|
Driving
Skills
IMPAIRED
|
|
2
|
.09
|
.08
|
.07
|
.06
|
.05
|
.05
|
.04
|
.04
|
|
3
|
.14
|
.11
|
.10
|
.09
|
.08
|
.07
|
.06
|
.06
|
|
4
|
.18
|
.15
|
.13
|
.11
|
.10
|
.09
|
.08
|
.08
|
LEGALLY
DRUNK IN
IOWA and
most states
|
|
5
|
.23
|
.19
|
.16
|
.14
|
.13
|
.11
|
.10
|
.09
|
|
6
|
.27
|
.23
|
.19
|
.17
|
.15
|
.14
|
.12
|
.11
|
|
7
|
.32
|
.27
|
.23
|
.20
|
.18
|
.16
|
.14
|
.13
|
|
8
|
.36
|
.30
|
.26
|
.23
|
.20
|
.18
|
.17
|
.15
|
|
9
|
.41
|
.34
|
.29
|
.26
|
.23
|
.20
|
.19
|
.17
|
Note: The data on the charts is indicative of only one hour of alcohol consumption. Consuming multiple drinks per hour over a period of more than one hour would render a person’s Blood Alcohol Content significantly higher than the data listed on the chart for one hour of consumption.
IMPAIRED DRIVING
|
|
DRINKS CONSUMED
|
EFFECTS
|
|
Male
|
Female
|
|
|
1
|
1
|
Ability to track moving objects and do tasks requiring divided attention may suffer. |
|
|
2 to 3
|
1 to 2
|
Thought, judgment and restraint more lax. Steering errors increase. Vision impaired. |
|
|
3 to 4
|
2 to 4
|
Legal limit in most states. Drivers are 3 to 4 times more likely to crash than a sober driver. Movements are clumsy. Reaction time slows more. |
|
0.10%
|
3 to 5
|
2 to 5
|
Drivers are 6 times more likely to crash. Movements are clumsy. Reaction time slows even more. |
|
|
4 to 7
|
3 to 7
|
Crashing is 25 times more likely. Reaction time increasingly affected especially in divided tasks. Field of vision narrows. |
One drink = 5 oz. glass of 12% wine, or 12 oz. glass of 5% beer, or 1.5 oz. 80 proof spirits, or 0.8 oz. 151 proof spirits
Figures contained in the charts are averages, BAC and effects of alcohol on individuals vary widely.
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