What Is the Eye Test That Police Use During a DUI Investigation?
The DUI eye test is officially known as the horizontal gaze nystagmus, or HGN. Police officers in Georgia use this test a lot to gather evidence that the person they pulled over is driving under the influence of alcohol. During this roadside test, the officer will instruct the driver to stand straight facing the officer. The officer then holds up their finger or a small penlight, and asks the person to follow their finger or light with their eyes. In the video below, a Georgia State Patrol officer demonstrates how to properly instruct a driver how to perform the DUI eye test and the signs law enforcement officers analyze during the HGN.