When a driver is arrested in the Commonwealth of Massachusetts for operating a motor vehicle under the influence of alcohol (OUI), local police or state troopers will attempt to administer a series of field sobriety tests. Three of these tests are considered standardized field sobriety tests, which were developed with help from the United States National Highway Traffic Safety Administration (NHTSA) and the International Association of Chiefs of Police.
In addition to these standard field sobriety tests, there are also a variety of unapproved field sobriety tests, such as asking suspect to recite the alphabet. This test has not been validated as accurate. There are even some stranger tests, such as dropping a coin on the ground an asking a suspect to pick it up to see how their balance is affected. This test is not done all too often, because, in addition to it not generally being admissible in court, suspects have fallen over and hit their heads on the asphalt.
Even approved tests such as the Horizontal Gaze Nystagmus (HGN) test are often not admissible in our state’s courts, unless an expert witness can validate the results. This leaves the breath test machine (colloquially called a breathalyzer, which is a genericized trademark) as the gold standard in proving whether a driver was drunk.
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