[TABLE="class: size11, align: center"]
[TR="class: tableheader, bgcolor: #015D7F"]
[TD]State[/TD]
[TD]Checkpoints Conducted?[/TD]
[TD]Frequency[/TD]
[TD]Legality[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Alabama[/TD]
[TD="align: center"]Yes[/TD]
[TD]Throughout the year[/TD]
[TD]Upheld under federal Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Alaska[/TD]
[TD="align: center"] No[/TD]
[TD][/TD]
[TD]No state authority[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Arizona[/TD]
[TD="align: center"] Yes[/TD]
[TD] At least once per month[/TD]
[TD]Upheld under federal Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Arkansas[/TD]
[TD="align: center"] Yes[/TD]
[TD] Weekly[/TD]
[TD]Upheld under state and federal Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
California[/TD]
[TD="align: center"] Yes[/TD]
[TD]2,500+ annually[/TD]
[TD]Upheld under state and federal Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Colorado[/TD]
[TD="align: center"] Yes[/TD]
[TD] Once or twice a month[/TD]
[TD]Upheld under state and federal Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Connecticut[/TD]
[TD="align: center"] Yes[/TD]
[TD][/TD]
[TD]Upheld under state Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Delaware[/TD]
[TD="align: center"] Yes[/TD]
[TD] Monthly January to June; weekly July through December[/TD]
[TD]Upheld under state law and federal Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
D.C.[/TD]
[TD="align: center"] Yes[/TD]
[TD] Once or twice a month[/TD]
[TD]Upheld under federal Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Florida[/TD]
[TD="align: center"] Yes[/TD]
[TD] Between 15-20 per month[/TD]
[TD]Upheld under federal Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Georgia[/TD]
[TD="align: center"] Yes[/TD]
[TD] Weekly[/TD]
[TD]Upheld under state and federal Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Hawaii[/TD]
[TD="align: center"] Yes[/TD]
[TD] Weekly[/TD]
[TD]Authorized by statute[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Idaho[/TD]
[TD="align: center"] No[/TD]
[TD][/TD]
[TD]Illiegal under state law[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Illinois[/TD]
[TD="align: center"] Yes[/TD]
[TD] Several hundred per year[/TD]
[TD]Upheld under federal Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Indiana[/TD]
[TD="align: center"] Yes[/TD]
[TD][/TD]
[TD]Upheld under state Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Iowa[/TD]
[TD="align: center"] No[/TD]
[TD][/TD]
[TD]Not permitted - statute authorizing roadblock controls does not authorize sobriety checkpoints[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Kansas[/TD]
[TD="align: center"] Yes[/TD]
[TD] Once or twice a month[/TD]
[TD]Upheld under state law and federal Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Kentucky[/TD]
[TD="align: center"] Yes[/TD]
[TD] Weekly[/TD]
[TD]Upheld under federal Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Louisiana[/TD]
[TD="align: center"] Yes[/TD]
[TD][/TD]
[TD]Upheld under state Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Maine[/TD]
[TD="align: center"] Yes[/TD]
[TD][/TD]
[TD]Upheld under federal Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Maryland[/TD]
[TD="align: center"] Yes[/TD]
[TD] Weekly[/TD]
[TD]Upheld under state and federal Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Massachusetts[/TD]
[TD="align: center"] Yes[/TD]
[TD] Year round[/TD]
[TD]Upheld under state and federal Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Michigan[/TD]
[TD="align: center"] No[/TD]
[TD][/TD]
[TD]Illegal under state Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Minnesota[/TD]
[TD="align: center"]No[/TD]
[TD][/TD]
[TD]Illegal under state Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Mississippi[/TD]
[TD="align: center"] Yes[/TD]
[TD] Weekly[/TD]
[TD]Upheld under federal Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Missouri[/TD]
[TD="align: center"] Yes[/TD]
[TD] Once or twice a month[/TD]
[TD]Upheld under state and federal Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Montana[/TD]
[TD="align: center"] No[/TD]
[TD][/TD]
[TD]Statute permits only safety spotchecks[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Nebraska[/TD]
[TD="align: center"] Yes[/TD]
[TD] 6 - 10 per month[/TD]
[TD]Upheld under state law[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Nevada[/TD]
[TD="align: center"] Yes[/TD]
[TD] Once or twice a month[/TD]
[TD]Authorized by statute[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
New Hampshire[/TD]
[TD="align: center"] Yes[/TD]
[TD] Weekly, weather permitting[/TD]
[TD]Authorized by statute (must be judicially approved)[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
New Jersey[/TD]
[TD="align: center"] Yes[/TD]
[TD] Once or twice a month[/TD]
[TD]Upheld under state and federal Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
New Mexico[/TD]
[TD="align: center"] Yes[/TD]
[TD][/TD]
[TD]Upheld under state and federal Constitution (law enforcement must follow guidelines)[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
New York[/TD]
[TD="align: center"] Yes[/TD]
[TD] Weekly[/TD]
[TD]Upheld under federal Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
North Carolina[/TD]
[TD="align: center"] Yes[/TD]
[TD] Weekly[/TD]
[TD]Authorized by statute[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
North Dakota[/TD]
[TD="align: center"] Yes[/TD]
[TD][/TD]
[TD]Upheld under state and federal Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Northern Mariana Islands [/TD]
[TD="align: center"]Yes[/TD]
[TD]Twice a month[/TD]
[TD][/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Ohio[/TD]
[TD="align: center"] Yes[/TD]
[TD] Year round[/TD]
[TD]Upheld under state and federal Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Oklahoma[/TD]
[TD="align: center"] Yes[/TD]
[TD] Once or twice a month[/TD]
[TD]Upheld under state and federal Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Oregon[/TD]
[TD="align: center"] No[/TD]
[TD][/TD]
[TD]Illegal under state Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Pennsylvania[/TD]
[TD="align: center"] Yes[/TD]
[TD] Several hundred per year[/TD]
[TD]Upheld under state and federal Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Rhode Island[/TD]
[TD="align: center"] No[/TD]
[TD][/TD]
[TD]Illegal under state Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
South Carolina[/TD]
[TD="align: center"] Yes[/TD]
[TD][/TD]
[TD]No state authority[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
South Dakota[/TD]
[TD="align: center"] Yes[/TD]
[TD] Weekly[/TD]
[TD]Upheld under state and federal Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Tennessee[/TD]
[TD="align: center"] Yes[/TD]
[TD] Once or twice a month[/TD]
[TD]Upheld under state and federal Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Texas[/TD]
[TD="align: center"] No[/TD]
[TD][/TD]
[TD]Illegal under Texas' interpretation of federal Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Utah[/TD]
[TD="align: center"] Yes[/TD]
[TD] About every other month[/TD]
[TD]Authorized by statute[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Vermont[/TD]
[TD="align: center"] Yes[/TD]
[TD] Weekly[/TD]
[TD]Upheld under state and federal Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Virgin Islands [/TD]
[TD="align: center"]Yes[/TD]
[TD]Monthly and during national mobilizations and local festivals and carnivals[/TD]
[TD][/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Virginia[/TD]
[TD="align: center"] Yes[/TD]
[TD] Weekly[/TD]
[TD]Upheld under state and federal Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Washington[/TD]
[TD="align: center"] No[/TD]
[TD][/TD]
[TD]Illegal under state Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
West Virginia[/TD]
[TD="align: center"] Yes[/TD]
[TD]Weekly[/TD]
[TD]Upheld under state and federal Constitution[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Wisconsin[/TD]
[TD="align: center"] No[/TD]
[TD][/TD]
[TD]Prohibited by statute[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]
Wyoming[/TD]
[TD="align: center"] No[/TD]
[TD][/TD]
[TD]Prohibited by interpretation of roadblock statute[/TD]
[/TR]
[/TABLE]
http://www.ghsa.org/html/stateinfo/laws/checkpoint_laws.html