How much can you drink and still drive
The legal blood alcohol limit in South Africa is 0.05g of alcohol per 100ml of blood. Put differently, it is the equivalent of 0.24mg alcohol per 1000ml of breath. What exactly does this mean to you?
In an ideal world, nobody who has had anything to drink will get behind the steering wheel of a car. But we don't live in an ideal world.
Alcohol the main cause of road fatalities
In South Africa, alcohol is thought to be involved in 65% of all fatal road accidents in which approximately 18 000 people are killed per year, and 150 000 injured. Driving under the influence of alcohol is a criminal offence, which could land you in jail for up to six years. In fact, after only one unit of alcohol, your chances of being in in accident are doubled.
If you have been drinking, it could slow down your body's responses, affecting your ability to process information and to respond in a crisis while you are driving.
How much can you drink and still be safe to drive?
Many things play a role, such as your gender, your metabolism, your weight, your age, the type of alcohol you are drinking, whether you were drinking on an empty stomach and what your stress levels are.
If you weigh in the region of 68kg, your body will take one hour to process one unit of alcohol. If you weigh less than that, you will need more time to process a unit, and vice versa.
One unit of alcohol contains 12 grams of pure alcohol, which translates into a single tot of spirits (about 10ml), about two-thirds of a beer, or one small glass (75ml – 100ml) of wine. Men metabolise alcohol slightly faster than women do.
A woman who weighs 45kg can be on the legal alcohol limit after just one drink, whereas a man weighing 81kg can have two drinks in the same time to reach the same blood alcohol level of 0.05g/100ml. A woman weighing 63kg will be just over the limit if she has two drinks in one hour. A man weighing 100kg will be at double the limit after 5 drinks.
Handy tips
The intoxicating effects of alcohol can be reduced by not drinking on an empty stomach. Fatty foods such as peanuts or chips are particularly effective when you do drink, because the fat in the food will coat the lining of your stomach, slowing the absorption of alcohol.
Make sure you don't lose track of how many drinks you have had, drink plenty of water in-between and get a friend to take you home, or phone a taxi if you suspect you might be over the legal alcohol limit.
Remember also that medical aid schemes in South Africa (referring to members on both comprehensive medical aid plans and hospital plan options), as well as insurance companies, are not legally obliged to pay out any claims which have arisen from you breaking the law.
By SUSAN ERASMUS
Sources:
South African against Drunk Driving; Road Traffic Management Corporation; Medical Research Council; Automobile Association
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