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Question

Difficulty: EasyAlcohol and Drugs

What effect does drinking alcohol have on a driver's reaction time when dealing with hazards?

  1. A
    It reduces reaction time, enabling quicker emergency stops
  2. It increases reaction time, causing slower responses to hazardsAnswer
  3. C
    It improves concentration, helping drivers identify hazards sooner
  4. D
    It has no effect on physical reaction speed when driving at low speeds

Answer

Alcohol increases reaction time, causing slower responses to hazards.
Alcohol is a depressant drug that impairs the central nervous system. It slows brain functions and physical reflexes, which increases reaction time and makes drivers take longer to respond to hazards on the road.

Step-by-Step Solution

1
Identify how alcohol acts as a depressant on the human nervous system.
Alcohol dulls the central nervous system and impairs brain signalling.
Understanding the physiological impact is essential to determine how driver reflexes are affected.
2
Apply the physiological effect of alcohol to reaction time and hazard response.
The driver requires more time to perceive and react to hazards, which increases reaction time and thinking distance.
Slower nerve impulses directly cause delayed physical actions when braking or steering.

Key Concept

Alcohol slows down brain functions and physical coordination, increasing reaction time and lengthening stopping distance.
Estimated Time:45s
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Topics

Alcohol and Drugs

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