Road safety campaigns and police enforcement have dramatically reduced drink driving since the first ‘booze bus’ hit Australian roads and the first drink driving campaign hit our screens in the 1980s. Show However, drink drivers still make up a large percentage of the statistics. Drink driving is the number one contributing factor in almost a third of fatal crashes in Australia and more than a quarter of drivers and riders killed on Australian roads have a BAC exceeding the legal limit. At just 0.02 your odds of being involved in a fatal crash have already doubled, compared to not drinking alcohol at all, and at 0.08 BAC you’re 13 times more likely to be involved in a fatal crash. While it’s different for everybody and is influenced by things like gender, body size, level of fitness, liver state and what you’ve eaten, a rough rule of thumb for a fully licensed driver to remain under the BAC limit is:
Re:act Many of us enjoy a night out with a few drinks and good company. While most are well aware of the risks associated with drinking and driving, the dangers of driving the morning after having a few drinks is less understood. Heavy drinking or drinking late into the night can easily leave you with blood alcohol levels that are too high to drive legally or safely the next morning. Keeping track of how much you drink and allowing enough time to recover are vital if you need to drive the morning after drinking the previous night. During the UN Global Road Safety Week (May 8–14), the 2017 Re:act campaign highlighted ‘the morning after’ message. Re:act is an innovative behavioural change project designed to influence the choices 18–25 year olds make by increasing awareness of the dangers they may face on the roads. Melbourne creative agency Hard Edge started the initiative in 2016 in collaboration with Swinburne University and with support from several organisations with a passion for improving road safety, including the Transport Accident Commission, RACV, Transurban and ARRB Group, which coordinates the National Road Safety Partnership Program. Each year Swinburne design students are challenged to create a campaign aimed at changing behaviour around road safety and social issues relevant to 18–25 year olds. The 2017 campaign asks young drivers to consider if they should be getting behind the wheel the morning after drinking heavily or late into the night. In 2016, the brief was to reduce mobile phone use while driving. Entries in the 2017 campaign will be judged on May 25, with the winning entry to be developed and rolled out on the Swinburne campus. HOW LONG SHOULD I WAIT? Dinner and wine A few after work Time to party A big(ger) night out Remember — this is a guide only. Everybody is different and you should always allow extra time for your body to process alcohol. Trying to judge exactly how much you can get away with drinking and the latest you would have to stop drinking is a risky strategy that is inviting a crash, a drink drive conviction or disciplinary action. Not to sound like an after-school special, but drinking and driving don’t mix. Alcohol affects your driving ability in several ways. Most notably, alcohol:
How soon do these effects wear off? What if you’ve had “a few” but feel fine? What if you feel a light buzz but know you’re under the legal limit? Here’s everything you need to know. Alcohol metabolism rates vary widely between people and situations. In general, your liver can process around 1 ounce of liquor per hour, which is roughly one standard drink. Keep in mind that boozy beverages aren’t created equal. Some contain more alcohol than others. Also, what you consider one drink could actually equate to more (sometimes ~a lot~ more) than what’s recognized as a standard drink. Obviously, the more drinks you consume, the longer it’ll take your body to process the alcohol. As a result, you’ll have a higher concentration of alcohol in your blood (more on this in a minute). The factors that can affect metabolism rate include:
Blood alcohol concentration (BAC) determines not only how drunk you feel, but whether you’re legally considered too impaired to drive. BAC is determined by the amount of alcohol in the blood compared to the amount of water in the blood. A BAC of .08 grams of alcohol per deciliter (g/dL) or higher is above the legal limit in the United States. But don’t let that number guide your choice to get behind the wheel. First, .08 g/dL is actually a bit higher than the .05 g/dL limit used by many European countries. Also, your driving skills can be affected even if you’re well under the legal limit, which could also result in legal problems. As a matter of fact, the National Highway Traffic Safety Administration reported that in 2018, 1,878 people were killed in alcohol-related crashes involving drivers with BACs below the legal limit in the United States. If you’ve landed here because you’re looking for a way to test if you’re sober enough to drive, you’re out of luck. There’s really no reliable way to self-test your ability to drive safely after drinking, even with a sleekly designed app on your phone. Alcohol affects your judgement, so you’d be in no position to evaluate your driving skills — or anyone else’s, for that matter — after drinking. You could use a personal breathalyzer, but it can only tell you what your BAC is. (Remember, your BAC is just a number. Having a legal BAC reading doesn’t necessarily mean it’s safe for you to drive.) Alcohol affects everyone differently, so while some may be able to function normally and drive safely at the legal limit, plenty of others can’t. The safest thing you can do is not get behind the wheel after you’ve been drinking. How do you sober up faster? You don’t. Sorry. The internet is full of advice and miracle potions that claim to help you sober up faster, but none of these work or have any kind of scientific evidence to back them up. The only thing that lowers your BAC is time, and how long that takes is individual to the person and the circumstances. The best you can do is wait it out, or not let your BAC get high in the first place. Doing the following can help you keep alcohol from impairing your ability to drive the next time you drink:
If you’re not sure whether it’s safe for you to drive, err on the side of caution and don’t drive. With someone dying in a drunk driving accident every 50 minutes in the United States, your safest bet is to not get behind the wheel after drinking. Make other arrangements for a ride home before drinking, or take the time to sleep it off before driving. Adrienne Santos-Longhurst is a Canada-based freelance writer and author who has written extensively on all things health and lifestyle for more than a decade. When she’s not holed-up in her writing shed researching an article or off interviewing health professionals, she can be found frolicking around her beach town with husband and dogs in tow or splashing about the lake trying to master the stand-up paddle board. How long after drinking is it OK to drive?The Standard 1-Hour per Drink Rule
Usually, you are safe to use the one-hour per drink rule. So, if you have two glasses of wine, you should wait two hours before driving. When you do an hour per drink, your body has time to overcome the other factors listed above, and hopefully, you have a safe enough BAC to drive.
Can I drive 6 hours after drinking?Even though you may have stopped drinking the night before, alcohol can remain in your blood for 6 hours and on your breath for up to 24 hours. You might feel okay to drive, but if the police pulled you over then you could be prosecuted for drink driving.
Can you still be drunk after 12 hours?Your body would have started to metabolize the alcohol at dinner, but it would be 12 hours later by the time all of the alcohol leaves your system. Even if you've metabolized a large portion of the alcohol by 8 am, you could still be register over .
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