From my past involvement with Traffic Safety, in states that use sobriety check points, the increased certainty of getting caught was a major factor in a reduction of DUI offenses. I think the over intrusive police state arguements are valid. It is tough to police a democratic society. I favor them simply because they pull drunks off the street and at least no one dies that night.

The comment about other countries is right on. I know from travelling in Europe they are very careful about driving. I have been out with groups of friends and one person always stays sober.