If your blood alcohol level is 0.15 grams per 100 milliliters of blood, your chances of an accident will increase

As you get more intoxicated, your risk of an accident increases sharply. 0.15 grams of alcohol per 100 milliliters of blood is nearly twice the legal definition of intoxication (0.08 grams per 100 milliliters of blood). At 0.15 grams, your chance of an accident is 25 times higher than when you're sober. (Note: An average 180-pound man will reach that level from the alcohol in just four standard drinks before his liver starts to break down the alcohol. One standard drink equals 12 ounces of beer, 5 ounces of wine, or 1.5 ounces of hard liquor.)