PulledOver.com | Missouri DWI Information Resource
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)