Delaware Driver Education State Practice Test

What is a potential physical effect of drowsy driving?

1. Increased alertness

2. Heightened reflexes

3. Reduced reaction time

4. Enhanced judgment

The correct answer is: Reduced reaction time

Drowsy driving can significantly impair a driver’s physical capabilities, and one of the most notable effects is reduced reaction time. When a person is drowsy, their brain may not respond as quickly to stimuli. This slowdown can be particularly dangerous while driving, as it can hinder the ability to react swiftly to sudden changes in traffic conditions, such as a pedestrian unexpectedly crossing the road or another vehicle abruptly stopping. While the other options imply positive effects—such as increased alertness and heightened reflexes—these do not occur while driving drowsy. In fact, drowsiness leads to the opposite effects: decreased alertness, slower reflexes, and poor judgment. Therefore, recognizing the impact of drowsiness on reaction time is crucial for understanding the dangers of driving while fatigued.