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A Sacramento DUI Attorney Examines the Horizontal Gaze Nystagmus Test

HGN testField sobriety tests are highly vulnerable to circumstances, such as the conditions of the road and physical problems with the person being tested. If you are arrested following a failed field test, your Sacramento DUI attorney may be able to use this in your defense.

Three Tests are Standard

The National Highway Traffic Safety Administration (NHTSA) has standardized three sobriety tests: the one-leg stand test, the walk-and-turn test, and the Horizontal Gaze Nystagmus Test. Failing these tests does not mean you will necessary be convicted of the charges against you.

Defining a Nystagmus: A Sacramento DUI Attorney Explains

When you vestibular (inner ear) system is disturbed, your eyeball makes a rhythmic, “back and forth” motion. This motion is known as the nystagmus. Although everyone’s eyes make motions naturally, the Horizontal Gaze Nystagmus (HGN) is a unique type of motion that jerky and involuntary. The person whose eyes are making the motion may not even be aware of it, because it doesn’t interfere with their vision at all. Your Sacramento DUI attorney can answer specific questions you may have about what the Horizontal Gaze Nystagmus means for your case.

Scoring the Horizontal Gaze Nystagmus involves several clues of impairment. If the arresting officer didn’t evaluate these, your Sacramento DUI lawyer may be able to get the test results dismissed.

A Sacramento DUI Attorney for Inadmissible Results

If officer giving your sobriety tests deviate from the set standard in any way, the result may be inadmissible. For this and other help with sobriety tests, call Sacramento DUI lawyer Param Pabla at (916) 285-7900 today.

Client Reviews
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“Param was excellent in my court case of failure to stop at a stop sign. The officer could not see clearly because he was too far away. The officer insisted he could and said he had video but could not produce it at the trial. The officer then asked if he could suspend the trial to go get the video but the judge said he should have had plenty of time to get the video ready beforehand. Needless to say, the judge ruled in my favor and dismissed the case which enraged the officer. Pabla Param’s defense and cross examination skills were excellent and paramount in having the case dismissed. Highly recommended.” T.C.
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