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New Police Video Recorder Captures Evidence of Intoxication in Driver’s Eyes
Michigan’s intoxicated driving laws cover intoxication by alcohol and all impairing drugs. Reliably detecting intoxication by drugs is more challenging for law enforcement than detecting intoxication caused by alcohol. One reason for this is that there is no roadside drug test that can help officers in the field determine the cause of impairment, and to distinguish drug-induced impairment from that caused from more benign causes such as sleep deprivation or certain medical conditions.
It is well-established for example, that alcohol can cause nystagmus, which is a jerking of the eye as it moves across a horizontal plane. Because of this correlation, the horizontal gaze nystagmus test, which looks for this jerking in the eye, is one of the three standardized field sobriety tests. This alcohol inducted jerking is easy to detect, and police officers around the country can testify in court about their observations during the HGN provided it the test is properly administered. The HGN is also part of the 12-step drug recognition protocol because some drugs other than alcohol can also cause nystagmus. However, a limitation for both prosecutors and defense attorneys is that police patrol vehicle video recording equipment is not able to record the nystagmus that officers ostensibly observe.
A novel solution to this need for a reliable roadside test for drugs, and the limitations of no HGN recording, has been developed and involves recording and analyzing the movement of a person’s eyes. This technology is currently undergoing a new round of funding and Michigan drivers may be subjected to it in the near future. As of the date of this article this technology is being used in Colorado, California, and Tennessee.
Michigan Criminal Defense Lawyer Blog

