If your BAL or blood alcohol level is .07, you can expect a 24% drop in complex performance compared to a sober level.
The most accurate way to measure a BAL is by breathalyzer. This level depends on how much you drink, but can also depend on factors such as a person's size, gender, physical condition, what he or she has eaten, how much he or she has slept, or any medications that he or she may be taking. Most states agree that driving with a BAL of .08 is legal if you are over the age of 21.
