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Difficulty: HardPhysiological Effects of Alcohol on Driving Performance

Alcohol consumption speeds up the eye's pupillary light reflex, which decreases the overall glare recovery time a driver requires to see clearly again after being exposed to bright oncoming headlights.

Answer: Answer

Answer

False
The correct answer is False because alcohol acts as a depressant on the central nervous system, delaying pupil responses and impairing retinal dark adaptation. Consequently, glare recovery time is increased rather than decreased, leaving an impaired driver with impaired night vision for longer durations after encountering bright lights.

Step-by-Step Solution

1
Analyze how alcohol impacts central nervous system function and autonomic muscle control.
Alcohol depresses neurological processing, slowing down automatic physical reactions including iris sphincter and dilator muscle responses.
Pupillary constriction and dilation are governed by autonomic reflexes that rely on central nervous system efficiency.
2
Determine the effect of delayed pupillary response on visual glare recovery while driving at night.
Because the pupil contracts and dilates more slowly and retinal dark adaptation is hindered, the driver experiences an extended window of glare blindness after light exposure.
Slower reflex kinetics increase glare recovery time, leaving the driver temporarily blind for a longer distance when passing bright headlights.

Key Concept

Impact of Alcohol on Pupillary Reflex and Glare Recovery Kinetics
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Topics

Physiological Effects of Alcohol on Driving Performance

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