Practice question

At what blood alcohol concentration (BAC) does alcohol begin to impair a driver's visual acuity, lateral field of view, and reaction time?

  1. From 0.3 g/l of blood (and measurably from the very first drink consumed)
  2. Only after reaching 1.5 g/l of blood
  3. Only when the driver feels physically dizzy or nauseous
  4. Alcohol has no physiological effect on vision or reflexes in experienced drivers

Answer: A — From 0.3 g/l of blood (and measurably from the very first drink consumed)

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