Blood Alcohol Concentration (BAC) Limits

Adult Operators of Noncommercial Motor Vehicles

Laws addressing blood alcohol concentration limits applicable to drivers of noncommercial automobiles, trucks, and motorcycles who have reached the legal drinking age of 21 years.

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Changes Over Time for Adult Operators of Noncommercial Motor Vehicles
Jurisdiction Date Range BAC Limit Per Se Citations
AK (Alaska)
1/1/1998 - 8/31/20010.10Yes1 Citations
AK (Alaska)
9/1/2001 - 1/1/20180.08Yes2 Citations
AZ (Arizona)
1/1/1998 - 8/30/20010.10Yes2 Citations
AZ (Arizona)
8/31/2001 - 1/1/20180.08Yes2 Citations
AR (Arkansas)
1/1/1998 - 8/12/20010.10Yes1 Citations
AR (Arkansas)
8/13/2001 - 1/1/20180.08Yes2 Citations
CO (Colorado)
1/1/1998 - 6/30/20040.10Yes1 Citations
CO (Colorado)
7/1/2004 - 1/1/20180.08Yes2 Citations
CT (Connecticut)
1/1/1998 - 6/30/20020.10Yes1 Citations
CT (Connecticut)
7/1/2002 - 1/1/20180.08Yes2 Citations
DE (Delaware)
1/1/1998 - 7/11/20040.10Yes1 Citations
DE (Delaware)
7/12/2004 - 1/1/20180.08Yes2 Citations
DC (District of Columbia)

Section designations in the District of Columbia Code were renumbered in connection with the publication of the D.C. Official Code, 2001 Edition.

1/1/1998 - 4/12/19990.10Yes1 Citations
DC (District of Columbia)

Section designations in the District of Columbia Code were renumbered in connection with the publication of the D.C. Official Code, 2001 Edition.

4/13/1999 - 1/1/20180.08Yes7 Citations
GA (Georgia)
1/1/1998 - 6/30/20010.10Yes1 Citations
GA (Georgia)
7/1/2001 - 1/1/20180.08Yes2 Citations
IN (Indiana)
1/1/1998 - 6/30/20010.10Yes1 Citations
IN (Indiana)
7/1/2001 - 1/1/20180.08Yes2 Citations
IA (Iowa)
1/1/1998 - 6/30/20030.10Yes1 Citations
IA (Iowa)
7/1/2003 - 1/1/20180.08Yes2 Citations
KY (Kentucky)
1/1/1998 - 9/30/20000.10Yes1 Citations
KY (Kentucky)
10/1/2000 - 1/1/20180.08Yes2 Citations
LA (Louisiana)
1/1/1998 - 9/29/20030.10Yes1 Citations
LA (Louisiana)
9/30/2003 - 1/1/20180.08Yes2 Citations
MD (Maryland)
1/1/1998 - 9/29/20010.10Yes2 Citations
MD (Maryland)
9/30/2001 - 1/1/20180.08Yes6 Citations
MA (Massachusetts)
1/1/1998 - 6/29/20030.08 1 Citations
MA (Massachusetts)
6/30/2003 - 1/1/20180.08Yes2 Citations
MI (Michigan)
1/1/1998 - 9/29/20030.10Yes1 Citations
MI (Michigan)
9/30/2003 - 1/1/20180.08Yes2 Citations
MN (Minnesota)
1/1/1998 - 7/31/20050.10Yes3 Citations
MN (Minnesota)
8/1/2005 - 1/1/20180.08Yes2 Citations
MS (Mississippi)
1/1/1998 - 6/30/20020.10Yes1 Citations
MS (Mississippi)
7/1/2002 - 1/1/20180.08Yes2 Citations
MO (Missouri)
1/1/1998 - 9/28/20010.10Yes1 Citations
MO (Missouri)
9/29/2001 - 1/1/20180.08Yes2 Citations
MT (Montana)
1/1/1998 - 4/14/20030.10Yes1 Citations
MT (Montana)
4/15/2003 - 1/1/20180.08Yes2 Citations
NE (Nebraska)
1/1/1998 - 8/31/20010.10Yes1 Citations
NE (Nebraska)
9/1/2001 - 1/1/20180.08Yes3 Citations
NV (Nevada)
1/1/1998 - 9/22/20030.10Yes1 Citations
NV (Nevada)
9/23/2003 - 1/1/20180.08Yes3 Citations
NJ (New Jersey)
1/1/1998 - 1/19/20040.10Yes1 Citations
NJ (New Jersey)
1/20/2004 - 1/1/20180.08Yes3 Citations
NY (New York)
1/1/1998 - 6/30/20030.10Yes1 Citations
NY (New York)
7/1/2003 - 1/1/20180.08Yes3 Citations
ND (North Dakota)
1/1/1998 - 8/26/20030.10Yes1 Citations
ND (North Dakota)
8/27/2003 - 1/1/20180.08Yes2 Citations
OH (Ohio)
1/1/1998 - 6/29/20030.10Yes1 Citations
OH (Ohio)
6/30/2003 - 1/1/20180.08Yes2 Citations
OK (Oklahoma)
1/1/1998 - 6/30/20010.10Yes1 Citations
OK (Oklahoma)
7/1/2001 - 1/1/20180.08Yes2 Citations
PA (Pennsylvania)
1/1/1998 - 9/29/20030.10Yes1 Citations
PA (Pennsylvania)
9/30/2003 - 1/1/20180.08Yes3 Citations
RI (Rhode Island)
1/1/1998 - 7/12/20000.10Yes1 Citations
RI (Rhode Island)
7/13/2000 - 1/1/20180.08Yes3 Citations
SC (South Carolina)
1/1/1998 - 12/31/20000.10 2 Citations
SC (South Carolina)
1/1/2001 - 8/18/20030.10Yes2 Citations
SC (South Carolina)
8/19/2003 - 1/1/20180.08Yes2 Citations
SD (South Dakota)
1/1/1998 - 6/30/20020.10Yes1 Citations
SD (South Dakota)
7/1/2002 - 1/1/20180.08Yes2 Citations
TN (Tennessee)
1/1/1998 - 6/30/20030.10Yes1 Citations
TN (Tennessee)
7/1/2003 - 1/1/20180.08Yes2 Citations
TX (Texas)
1/1/1998 - 8/31/19990.10Yes2 Citations
TX (Texas)
9/1/1999 - 1/1/20180.08Yes3 Citations
WA (Washington)
1/1/1998 - 12/31/19980.10Yes1 Citations
WA (Washington)
1/1/1999 - 1/1/20180.08Yes2 Citations
WV (West Virginia)
1/1/1998 - 5/4/20040.10Yes1 Citations
WV (West Virginia)
5/5/2004 - 1/1/20180.08Yes2 Citations
WI (Wisconsin)
1/1/1998 - 9/29/20030.10Yes2 Citations
WI (Wisconsin)
9/30/2003 - 1/1/20180.08Yes3 Citations
WY (Wyoming)
1/1/1998 - 6/30/20020.10Yes1 Citations
WY (Wyoming)
7/1/2002 - 1/1/20180.08Yes2 Citations