What should the object being used in the HGN test be positioned relative to the driver's eye level?

The object used in the Horizontal Gaze Nystagmus (HGN) test should be positioned slightly above the driver's eye level. This positioning is essential because it allows the officer to effectively evaluate the driver's eye movement and detect nystagmus, which is an involuntary jerking of the eyes that can indicate impairment. When the object is slightly elevated, it encourages the driver to follow the object smoothly with their eyes without any strain. This optimal angle enhances the visibility of any abnormal eye movements that could suggest intoxication.

Correct positioning also helps ensure that the test is more standardized, allowing for more reliable and valid results during the evaluation of potential DUI impairment.