What is the maximum blood alcohol level at which a public service driver may drive?
Human factor: Alcohol, drugs, and medications
Explanation
The **blood alcohol concentration** is the amount of alcohol present in the blood or in the exhaled air after drinking. For **public service drivers**, who transport more than nine people, minors, or people in emergency services, the maximum allowed rate is **0.15 mg/liter of exhaled air**. This is because these drivers have a greater responsibility and must ensure the safety of their passengers.
In comparison, for other drivers, the allowed rate is 0.25 mg/liter of exhaled air. However, the only completely safe rate for driving is **0.0**, that is, not consuming alcohol before driving.
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