Santa Monica Police Officers administer breathalyzer test during "Know Your Limit" event at the 100 block of Wilshire on Saturday, September 3, 2022. The “Know Your Limit” program raises awareness about the dangers of drinking and driving and is an interactive way to show how much, or little, it can take to reach the legal limit to operate a vehicle. Officers ask customers how many drinks they have consumed and whether they believe they are still able to drive safely. Officers then invite volunteers to take a breathalyzer test to see if they are able to guess their blood alcohol content (BAC). Customers are provided information on alcohol intake and average BAC levels. Impaired drivers put others on the road at significant risk. Any prevention measures that reduce the number of impaired drivers on our roads significantly improves traffic safety. SMPD reminds the public that impaired driving is not just from alcohol. Some prescription medications and over-the-counter drugs may interfere with driving. While medicinal and recreational marijuana are legal, driving under the influence of marijuana is illegal. It is illegal for anyone 21 or older to drive with a BAC of .08% or higher. According to the California Driver Handbook, it takes two drinks consumed within one hour by a woman between 120-160 pounds and three drinks by a man between 180-220 pounds to be over the legal limit of .08%. One drink is based on 1.5 oz. of liquor (40% alcohol), 12 oz. of beer (4.5% alcohol) or a 5 oz. glass of wine (12% alcohol). The BAC lowers at a rate of .01% for every 40 minutes between drinks. The goal is to help people understand the effects of alcohol so they can make smart decisions about how they get home. It only takes a few drinks to impair, and that’s why it is important that people know their limit. Drivers charged with a first-time DUI face an average of $13,500 in fines and penalties, as well as a suspended license. Funding for this program was provided by a grant from the California Office of Traffic Safety, through the National Highway Traffic Safety Administration.