The below explains the visual cues contained in the DWI Detection Guide provide by the U.S. Department of Transportation. The number given after each visual cue is the probability that a driver exhibiting that cue has a BAC equal or greater than 0.10. For example the 65 for the first cue, Turning With Wide Radius, means that chances are 65 out of 100 that a driver who turns with a wide radius at night will have a BAC equal to or greater that 0.10. (print out the actual booklet - PDF Format)
return to main page or the current version & The Detection of DWI Motorcyclists
this page originally posted 12/20/98 updated to tour format, 1/28/99, then to Squarespace for the last update 6/4/2009 since 1997
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