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11. Driving Under the Influence

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4. BAC Statistics

Understanding Blood Alcohol Concentration (BAC)

Your Blood Alcohol Concentration (BAC) is the measure of alcohol in your bloodstream, defining your level of intoxication. Several factors influence your BAC:

  • Gender
  • Duration of drinking
  • Body weight
  • Medications taken
  • Recent food consumption

In California, a BAC of 0.08% indicates legal intoxication for individuals over 21. To put it in perspective, this means you have 8/10ths of a drop of alcohol for every 1,000 drops of blood in your body!

For those under 21, impairment is noted at 0.01%. Despite feeling euphoric or happy due to alcohol's effect on the brain's "pleasure center," your motor skills may be significantly impaired, making activities like driving unsafe.

Here's a breakdown of BAC levels and associated effects:

  • 0.05%: Euphoria, relaxation, slight memory impairment.
  • 0.07%: Changes in balance and vision become noticeable.
  • 0.10%: Uncoordinated movements, slurred speech, loss of inhibitions.
  • 0.12%: Impaired judgment, unrestrained behavior.
  • 0.20%: Drowsiness, lethargy, difficulty walking without assistance.
  • 0.30%: Stupor or risk of falling into a coma.
  • 0.40%: Severe suppression of respiratory function, potential fatality.

Consuming 12 drinks can elevate BAC levels to 0.50%, a dangerously high level potentially leading to death.

It's important to note that regardless of the source (beer, wine, or spirits), the amount of alcohol in standard servings remains consistent. Upon ingestion, alcohol is absorbed into the bloodstream and metabolized by the liver, with a processing rate of approximately one ounce of liquor per hour.

Contrary to common myths, sobering up isn't hastened by cold showers, coffee, or exercise. The sobering process depends on factors such as body weight and food intake, with no reliable methods for expediting it.




Lesson Summary


  

Lesson 11 Quiz


You will now answer 5 questions to test what you learned during this lesson. You must answer all questions correctly to receive completion credit for this lesson. You may answer the questions as many times as necessary to get them right.

You should review the lesson material if you don't do well on the quiz.

  1. Alcohol is a:


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  2. After completing all 11 lessons and then passing the final test, your certificate of completion of driver education will be:


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  3. If you are under 21, the zero tolerance policy for drinking and driving will revoke your license even if your BAC is as low as what percent?


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  4. BAC stands for:


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  5. Designated Drivers:


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