What is a common effect of alcohol on driving performance?

Alcohol consumption significantly impairs several critical functions necessary for safe driving, with slowed reaction time being one of the most common and well-documented effects. When a person drinks alcohol, it affects the brain’s ability to process information quickly and respond appropriately to unexpected situations. This can lead to delayed reactions when a driver needs to make quick decisions, such as braking suddenly to avoid a collision or navigating around obstacles.

Increased concentration, improved judgment, and better focus on the road are not accurate descriptions of alcohol's effects. In fact, alcohol generally diminishes these abilities. It can create a false sense of confidence, leading individuals to misjudge their capabilities and the dangers of the driving environment. Thus, recognizing that alcohol slows reaction times is crucial for understanding its impact on driving safety.