• Improved Field Sobriety Testing - HGN, Walk & Turn, One Leg Stand.  What the National Highway Traffic Safety Institute [NHTSI] Has To Say.  " . . .in the beginning the government created . . . "  .pdf file

  • Horizontal Gaze Nystagmus: The Science & The Law A Resource Guide for Judges, Prosecutors and Law Enforcement. Note:  This is prosecution oriented information written with a view towards law enforcement and justification of the HGN tests.  Please be aware that HGN testing as a field sobriety test is fraught with problems, inaccuracies, false and voodoo science, and just plain misunderstanding in its administration and application.

  • HGN - Horizontal Gaze Nystagmus - Lane Means - more prosecution oriented propaganda regarding the eye test.

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