What does equal tracking indicate during a driver's resting nystagmus evaluation?

Equal tracking during a driver's resting nystagmus evaluation signifies that both eyes are effectively following a moving target or object in a coordinated manner. This coordination is an important aspect of eye function, as it indicates that the neurological and physiological systems responsible for eye movement are functioning properly.

When evaluating for signs of impairment, equal tracking serves as a baseline for comparison. If one eye tracks differently from the other or shows signs of jerking independently, it could suggest possible neurological impairment or the influence of substances. This aspect of nystagmus assessment is crucial for law enforcement officers when determining whether a driver may be under the influence. Therefore, recognizing equal tracking is integral to accurately assessing a driver’s condition during a DUI traffic stop.