What is driver fatigue?

A progressive state that reduces alertness and decision-making ability Fatigue is a progressive and dangerous state that reduces alertness and decision-making ability, which can lead to serious errors or delays in response while driving.

Which of the following is a typical symptom of driver fatigue?

Heavy eyelids and blurred vision Symptoms of fatigue include heavy eyelids and blurred vision, increased reaction time, numbness in the arms, and loss of attention.

Which of the following is a common cause of fatigue while driving?

Poor posture and high temperatures inside the vehicle Poor posture, maintaining excessive speed for a long time, heavy traffic, adverse weather, and poor ventilation or high temperatures inside the vehicle all contribute to fatigue.

How often is it recommended to take a break to combat fatigue on a long journey?

At least 20 minutes every 2 hours or 200 km It is recommended to take a break of at least 20 minutes every 2 hours or every 200 km of driving to combat fatigue.

Why is it not advisable to rely on stimulants such as coffee to fight fatigue?

Because they can cause a rebound effect with sudden drowsiness 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.

Physical Condition of the Driver

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Reviewed on 7 Oct 2026

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Frequently asked questions

What is driver fatigue?: A progressive state that reduces alertness and decision-making ability Fatigue is a progressive and dangerous state that reduces alertness and decision-making ability, which can lead to serious errors or delays in response while driving.
Which of the following is a typical symptom of driver fatigue?: Heavy eyelids and blurred vision Symptoms of fatigue include heavy eyelids and blurred vision, increased reaction time, numbness in the arms, and loss of attention.
Which of the following is a common cause of fatigue while driving?: Poor posture and high temperatures inside the vehicle Poor posture, maintaining excessive speed for a long time, heavy traffic, adverse weather, and poor ventilation or high temperatures inside the vehicle all contribute to fatigue.
How often is it recommended to take a break to combat fatigue on a long journey?: At least 20 minutes every 2 hours or 200 km It is recommended to take a break of at least 20 minutes every 2 hours or every 200 km of driving to combat fatigue.
Why is it not advisable to rely on stimulants such as coffee to fight fatigue?: Because they can cause a rebound effect with sudden drowsiness 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.