Alcohol Impairment Charts
ALCOHOL IMPAIRMENT CHART
MALES
|
APPROXIMATE BLOOD ALCOHOL PERCENTAGE
|
| DRINKS* |
BODY WEIGHT IN POUNDS
|
EFFECT ON PERSON
|
| |
100 |
120 |
140 |
160 |
180 |
200 |
220 |
240 |
|
|
0
|
.00 |
.00 |
.00 |
.00 |
.00 |
.00 |
.00 |
.00 |
ONLY SAFE DRIVING LIMIT
|
|
1
|
.04 |
.03 |
.03 |
.02 |
.02 |
.02 |
.02 |
.02 |
IMPAIRMENT BEGINS.
|
|
2
|
.08 |
.06 |
.05 |
.05 |
.04 |
.04 |
.03 |
.03 |
|
3
|
.11 |
.09 |
.08 |
.07 |
.06 |
.06 |
.05 |
.05 |
DRIVING SKILLS SIGNIFICANTLY AFFECTED.
** CRIMINAL PENALTIES IN MOST STATES
|
|
4
|
.15 |
.12 |
.11 |
.09 |
.08 |
.08 |
.07 |
.06 |
|
5
|
.19 |
.16 |
.13 |
.12 |
.11 |
.09 |
.09 |
.08 |
|
6
|
.23 |
.19 |
.16 |
.14 |
.13 |
.11 |
.10 |
.09 |
|
7
|
.26 |
.22 |
.19 |
.16 |
.15 |
.13 |
.12 |
.11 |
LEGALLY INTOXICATED.
CRIMINAL PENALTIES IN ALL STATES
|
|
8
|
.30 |
.25 |
.21 |
.19 |
.17 |
.15 |
.14 |
.13 |
|
9
|
.34 |
.28 |
.24 |
.21 |
.19 |
.17 |
.15 |
.14 |
|
10
|
.38 |
.31 |
.27 |
.23 |
.21 |
.19 |
.17 |
.16 |
Subtract .01% for each 40 minutes of drinking.
* One drink is equal to 1¼ oz. of 80-proof liquor, 12 oz. of beer, or 4 oz. of table wine.
**ALL states have a .08 BAC per se law
—The final one takes effect in August of 2005. (Updated: Sept. 24th, 2004)
ALCOHOL IMPAIRMENT CHART
FEMALES
|
APPROXIMATE BLOOD ALCOHOL PERCENTAGE
|
| DRINKS* |
BODY WEIGHT IN POUNDS
|
EFFECT ON PERSON
|
| |
90 |
100 |
120 |
140 |
160 |
180 |
200 |
220 |
240 |
|
|
0
|
.00 |
.00 |
.00 |
.00 |
.00 |
.00 |
.00 |
.00 |
.00 |
ONLY SAFE DRIVING LIMIT
|
|
1
|
.05 |
.05 |
.04 |
.03 |
.03 |
.03 |
.02 |
.02 |
.02 |
IMPAIRMENT BEGINS.
|
|
2
|
.10 |
.09 |
.08 |
.07 |
.06 |
.05 |
.05 |
.04 |
.04 |
DRIVING SKILLS SIGNIFICANTLY AFFECTED.
** CRIMINAL PENALTIES IN MOST STATES
|
|
3
|
.15 |
.14 |
.11 |
.11 |
.09 |
.08 |
.07 |
.06 |
.06 |
|
4
|
.20 |
.18 |
.15 |
.13 |
.11 |
.10 |
.09 |
.08 |
.08 |
|
5
|
.25 |
.23 |
.19 |
.16 |
.14 |
.13 |
.11 |
.10 |
.09 |
|
6
|
.30 |
.27 |
.23 |
.19 |
.17 |
.15 |
.14 |
.12 |
.11 |
LEGALLY INTOXICATED.
CRIMINAL PENALTIES IN ALL STATES
|
|
7
|
.35 |
.32 |
.27 |
.23 |
.20 |
.18 |
.16 |
.14 |
.13 |
|
8
|
.40 |
.36 |
.30 |
.26 |
.23 |
.20 |
.18 |
.17 |
.15 |
|
9
|
.45 |
.41 |
.34 |
.29 |
.26 |
.23 |
.20 |
.19 |
.17 |
|
10
|
.51 |
.45 |
.38 |
.32 |
.28 |
.25 |
.23 |
.21 |
.19 |
Subtract .01% for each 40 minutes of drinking.
* One drink is equal to 1¼ oz. of 80-proof liquor, 12 oz. of beer, or 4 oz. of table wine.
**ALL states have a .08 BAC per se law
—The final one takes effect in August of 2005. (Updated: Sept. 24th, 2004)
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