As a general rule, it is prohibited to drive cars with a blood alcohol level higher than...
Human factor: Alcohol, drugs, and medications
Explanation
The **blood alcohol concentration (BAC)** is the amount of alcohol present in a person's blood. For drivers of passenger cars and other vehicles without special restrictions, the maximum permitted BAC is **0.5 grams of alcohol per liter of blood**. This means that if a driver exceeds this amount, they are breaking the law.
- For novice drivers (with less than two years of experience) and drivers of special vehicles (such as those transporting heavy goods or people), the permitted BAC is lower, at **0.3 grams per liter of blood**. However, this restriction does not apply to more experienced passenger car drivers.
- Exceeding the BAC of 0.5 grams per liter of blood can result in legal penalties, such as fines or even imprisonment, as driving under the influence of alcohol is prohibited and dangerous.
Therefore, for experienced passenger car drivers, the permitted BAC is **0.5 grams per liter of blood**, which makes this the correct answer.
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