Physical Condition of the Driver
Why is it not advisable to rely on stimulants such as coffee to fight fatigue?
Reviewed on 9 Aug 2026
- A Because coffee improves reflexes too much
- ✓ Because they can cause a rebound effect with sudden drowsiness
- C Because they are forbidden before driving
- D Because they increase blood alcohol concentration
Why this is the correct answer
Excessive use of stimulants such as coffee can cause a "rebound effect": sudden drowsiness when its effects wear off, which is very dangerous at the wheel.
More questions on Physical Condition of the Driver
- During a microsleep of a few seconds at 120 km/h, how far can a vehicle travel out of control?
- Which of the following factors increases drowsiness while driving?
- While driving, you cannot remember the last few kilometres and you drift out of your lane. What does this tell you?
- What is one of the most effective measures against drowsiness while driving?
- During which time periods is the risk of drowsiness at the wheel highest?
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