Articles Tagged with Field Sobriety Test

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In Arizona, a motorist may be charged with Marijuana DUI, if they are under the influence of Marijuana, and they are driving “impaired to the slightest degree” A.R.S. 28 § 1381.

The burden of proof rests with prosecution to “prove beyond a reasonable doubt” that a person was actually driving impaired due to Marijuana found in their bloodstream.

Marijuana can actually remain in the blood stream for days and even weeks depending on how much was inhaled or ingested, and the frequency of use. In some cases, traces of Marijuana can be found after a month of use has passed.

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Standard Field Sobriety Test v. Field Sobriety Test

Field Sobriety Tests in Arizona are a battery of preliminary roadside test that police use to screen impaired drivers. The National Highway Traffic Safety Administration (NHTSA) has only three approved  roadside tests referred to as Standard Field Sobriety Tests (SFST)s which are sponsored and developed to assist police offers in early detection of DUI and DWI suspects. Police officers must be formally trained and accredited to administer the tests. The three standardized tests are:

  1. The Horizontal Gaze Nystagmus (HGN)
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