If under 21 years of age, you are considered to be driving under the influence if your blood alcohol level is what percentage or higher?

In Pennsylvania, individuals under the age of 21 are held to a stricter standard regarding blood alcohol concentration (BAC) when it comes to driving under the influence (DUI). The legal BAC limit for adults aged 21 and over is set at .08%. However, for those under 21, any detectable amount of alcohol can lead to a DUI charge. This is why the correct answer is .02%: it represents a threshold that is considered significant enough to indicate impairment in drivers who are not legally permitted to consume alcohol.

This reduced limit reflects the state's commitment to reducing alcohol-related incidents among younger drivers, recognizing that any consumption can affect their driving ability. Therefore, a blood alcohol level of .02% or higher signals that a young driver may be impaired and can face penalties just as if they were over the adult limit.