How do you know when you've had enough to drink? That can be a more
difficult question than it seems at first. You may think you know when
you've had enough. But do you? In California, it's illegal to operate a
vehicle if any one of the following conditions is true:
- You are over 21 and have a blood alcohol concentration (BAC) of .08
- You are driving a commercial vehicle and have a BAC of .04 or
- You are under 21 and have a BAC of .01 or greater OR you have been
drinking, period. If you are under 21, the reasoning goes, it's illegal
for you to drink anyway. Therefore, it's doubly illegal for you to
drink and drive, even if you didn't drink enough to become
- You are "under the influence" of alcohol or any drug.
California has these laws in place to protect its citizens from the
dangers posed by drunk driving. You definitely don't want to get caught
on the wrong side of them! The only way to be completely safe is not to
drink and drive at all.