Arizona Drivers Permit Pactice Exam

At what blood alcohol concentration is a driver considered to be under the extreme influence?

1. 0.05%

2. 0.08%

3. 0.10%

4. 0.15%

The correct answer is: 0.08%

A driver is considered to be under the extreme influence when their blood alcohol concentration (BAC) reaches 0.15%. This level indicates a significant impairment of motor skills and judgment, leading to a higher risk of accidents and unsafe driving behavior. Laws regarding BAC levels are designed to protect both the driver and the public by ensuring that individuals operate vehicles only when they are fit to do so. While a BAC of 0.08% is the legal limit for general impairment in many states, including Arizona, it does not signify 'extreme influence.' Levels above this threshold, such as 0.10% and 0.15%, indicate increasing degrees of impairment, with 0.15% highlighting a severe risk to safety. Therefore, recognizing the importance of these thresholds can help drivers understand the severity of their choices and the legal implications of drinking and driving.