Which of the following is a common impairment sign other than odor of alcohol?

• A. Difficulty in balance or coordination.
• B. Bright lights in the eyes.
• C. Shouting at other drivers.
• D. Strong perfume.

Answer: (B)

Understanding impairment signs means recognizing how intoxication or fatigue can affect perception and reaction, not just smell. Bright lights in the eyes can signal a disruption in visual processing that often accompanies impairment—the glare from headlights or streetlights becomes more bothersome, and the driver may squint, avert their gaze, or have trouble focusing. This visual sensitivity is a observable cue that someone’s perception is being affected, which is a direct indicator of impairment even if there’s no detectable odor. By contrast, shouting at other drivers is a behavioral issue, strong perfume is an environmental factor, and difficulty balancing is a motor coordination sign that may or may not be present in every impairment scenario. The light sensitivity point to perceptual disturbance makes it the most fitting sign in this set.