The effect that lack of sleep has on your safe driving ability is the same as:
- The effect that alcohol has. ✓
- The effect that amphetamines have.
- The effect that anger has.
- The effect that driving with teenagers has.
Answer: A. The effect that alcohol has.
Lack of sleep affects your driving the same way alcohol does — drowsy driving can be just as dangerous as drunk driving.
Why this is the answer
The handbook's drowsy driving section makes the comparison directly: driving tired is as dangerous as driving drunk. It lists what fatigue does to you — it slows your thinking and reaction time, changes your judgment and vision, dulls your senses and skills, and can put you into micro-sleeps or full sleep at the wheel. Those are the same kinds of losses that make an impaired driver unsafe, which is why the handbook tells you not to drive when you are tired.
Why the other answers are wrong
- B. The effect that amphetamines have. — Amphetamines are not named in the handbook as matching the effect of lost sleep; the drowsy driving section compares fatigue to alcohol, not to stimulants.
- C. The effect that anger has. — Anger appears only in the road rage discussion, which describes violent or visibly angry behavior that can cause crashes — it is never equated with the effects of being sleep deprived.
- D. The effect that driving with teenagers has. — Having teenagers in the car is not mentioned anywhere in these passages as producing the same effect as fatigue.
Remember it
If you would not drive after drinking, do not drive while sleepy — the handbook treats tired driving as drunk-level dangerous.