This description of the Walk and Turn test posted by San Francisco DUI Lawyer.
Your San Francisco DUI Lawyer wants you to be well informed. Here is a basic description of the Walk and Turn Test :
The officer must observe the suspect from three or four feet away and remain motionless while the suspect performs the test. Being too close or excessive motion may affect the reliability of this test. The officer must give good verbal instructions and accompany the test with a complete demonstration. The suspect must understand the instructions and acknowledge understanding prior to the test beginning. The officer should document that affirmative response. This test is scored in relation to eight scoring factors that can be seen in two separate stages. The first stage of this test is called the Instruction Stage.
This will set the stage for the entire test. If the officer does not follow training and procedure during this stage, it may affect the validity of the entire test. The officer must verbally tell the suspect to place their left foot on the line and to place their own left foot on the line during demonstration. The person is then told to place their right foot on the line, ahead of their left foot, with the heel of the right foot against the toe of the left foot. This is also demonstrated. The person is then told to place their arms down at their side. They are instructed to maintain this position until told to begin and not to start until told to do so. They must then indicate an understanding of the test after being asked if they understand.
This is what you can expect when facing a California DUI. Please don't take chances with your life. Please click below to select the California county where you need the best possible DUI Defense.
The officer is also trained at the conclusion of HGN, to check for Vertical Gaze Nystagmus or VGN. This is commonly used by the Drug Recognition Technician or Expert to determine impairment due to certain drugs. The VGN test is simple to administer. The stimulus is once again positioned 12 to 15 inches in front of the person's face. It is positioned horizontally in front of the face. The person must hold the head still and is instructed in same. They must follow the stimulus with their eyes as the stimulus or object is raised until the person's eyes are elevated as far as they can go. The object is held for four seconds and nystagmus or evidence of jerking is watched for.
The ADMINISTRATIVE PROCEDURES of the HGN test are:
1) Eyeglasses/Contacts
2) Verbal Instructions
3) Positioning of the Object (12-15 inches)
4) Tracking Ability
5) Check for Pupil Size
6) Lack of Smooth Pursuit
7) Distinct Nystagmus at Maximum Deviation
8) Angle of Onset of Nystagmus Prior to 45 Degrees
9) Total The Clues-Decision Point 4
10)Vertical Gaze Nystagmus
This is what you can expect when facing a California DUI. Please don't take chances with your life. Please click below to select the California county where you need the best possible DUI Defense.
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