What is a common challenge faced when administering sobriety tests in low-light conditions?

In low-light conditions, administering sobriety tests can lead to inaccurate readings primarily due to the limitations in visibility. This environmental challenge affects the officer's ability to clearly see the subject’s movements and behaviors, which are crucial for accurately assessing sobriety. The tests often rely on specific visual cues such as balance, coordination, and ability to follow instructions, all of which can be difficult to evaluate without good lighting. Consequently, the inability to properly observe these indicators can result in misinterpretations of a subject's actual state of intoxication.

While other factors like difficulty seeing the subject and increased distraction might contribute to challenges faced in low-light environments, the fundamental issue is that the tests’ accuracy is significantly compromised by inadequate lighting, leading to unreliable results. Enhanced observational capacity, on the other hand, contradicts the inherent difficulties posed by low-light conditions.