What is the Blod alcohol content of over 21 years old?

In the United States, the legal limit for blood alcohol content (BAC) for individuals over 21 years old is 0.08%. This means that if a person's BAC is at or above this level, they are considered legally impaired for driving. Some states may have lower limits for specific driver categories, such as commercial drivers or those with prior offenses. It's important to note that even below this limit, alcohol can still impair judgment and coordination.