preview

Field Sobriety Test

Decent Essays
Open Document

Field sobriety tests are the subject of hot debate. On one hand, a motorist that's clearly over the legal alcohol limit will usually display characteristic behavior that makes them easy to spot. On the other hand, many of the field tests require skills that could be compromised for reasons other than inebriation. In fact, in a U.S. Department of Transportation study, no field sobriety test was 100% accurate. This makes it difficult to say whether these tests are useful or a detriment to motorist's basic rights. To better understand this debate, it's useful to look at each individual type of field sobriety test. Each one has specific strengths as well as situations where it isn't necessarily the most appropriate measure. Horizontal Gaze Nystagmus …show more content…

In this field sobriety test, the officer will ask you to move your gaze to the side while tracking a pen or other object. They will often pair this with a flashlight to aid in their ability to accurately observe your eyes. The signs of impairment that they're looking for include: Inability to smoothly track the object Eyeball twitching at the extreme angles Earlier twitching as your gaze progresses to the extremes Inaccuracies in this test come from two major sources. The first is the environment. Wind, light, and other variables can cause involuntary reactions from your eyes in a field test environment. These can often be misinterpreted as a sign of impairment, even with experienced officers. Also, since most field tests happen at night, headlights and other flashes make this scenario even more likely. The second source of inaccuracy comes from the medical history of the motorist. There are a number of medical reasons for nystagmus, including nearsightedness, epilepsy medications, and inner-ear inflammation. The attending officer might not know of these conditions--in fact, the motorist themselves might not know if they have an inner-ear infection. For these reasons, it's perfectly conceivable that sober motorists could fail the horizontal gaze nystagmus test. Walk and …show more content…

There are a number of legitimate physical reasons why a person's natural stride involves their big toe pointing away from their center line. For these individuals, a heel-to-toe step is actually quite difficult--worse so when combined with the nerves and anxiety of a traffic stop. One-Legged Stand This classic sobriety indicator involves the motorist standing on one leg for thirty seconds. Any wobble or excessive use of arms to balance could indicate a significant impairment. Of all the tests used to screen for inebriation, this one is arguably the most unfair. Even athletes have issues with this position, and focus on it in their training for maximum performance. On top of that, the inability to perform this pose has been linked to damaged blood vessels in the brain--indicating a higher risk of having a stroke. Regardless, unless you practice this position regularly, it's likely that you'll fall out of a one-footed stance, even if you haven't had too much to

Get Access