Physical Condition of the Driver

How long after drinking does blood alcohol concentration reach its peak?

Reviewed on 9 Aug 2026

Question image: How long after drinking does blood alcohol concentration reach its peak?
  • A A few minutes after drinking
  • ✓ About one hour later
  • C Five hours after drinking
  • D Only the next day

Why this is the correct answer

Blood alcohol concentration peaks about one hour after drinking and then decreases very slowly. This is why it is not safe to drive soon after drinking.

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