Arielle Cruz
South Africa has the sixth-highest per capita alcohol consumption rate globally, and alcohol is involved in 51% of road fatalities in the country. The legal blood alcohol concentration (BAC) limit in South Africa for drivers on public roads is 0.05g of alcohol per 100 millilitres of blood or 0.24 milligrams per litre of exhaled breath. For professional drivers, the limit is stricter, at 0.02g of alcohol per 100 millilitres of blood or 0.10 milligrams per litre of exhaled breath. These limits are crucial to road safety, and law enforcement agencies are increasingly conducting roadblocks and checkpoints to address drunk driving.
| Characteristics | Values |
|---|---|
| Legal Blood Alcohol Concentration (BAC) Limit | 0.05g of alcohol per 100ml of blood ( <0.05% BAC) |
| Legal Breath Alcohol Concentration (BrAC) Limit | 0.24 milligrams per litre of exhaled breath |
| Legal Limit for Professional Drivers (BAC) | 0.02g of alcohol per 100ml of blood ( <0.02% BAC) |
| Legal Limit for Professional Drivers (BrAC) | 0.10 milligrams per litre of exhaled breath |
| Equivalent Alcohol Consumption for Average Person | 2 to 3 units of alcohol consumed within 1 hour |
| Equivalent Alcohol Consumption for Professional Drivers | 1 unit of alcohol consumed within 1 hour |
| Whisky and Brandy Limit | 1 25ml tot of alcohol per hour |
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What You'll Learn
The legal limit for professional drivers
In South Africa, the legal blood alcohol limit for professional drivers is 0.02 g of alcohol per 100 ml of blood or 0.10 mg of alcohol per litre of exhaled air. This is half the limit for regular drivers, which is 0.05 g of alcohol per 100 ml of blood or 0.24 mg of alcohol per litre of exhaled breath.
These limits are strictly enforced, and any professional driver found to be over the limit will be arrested and detained at the nearest police station. They may be tested after an accident, erratic driving, or failing a breathalyser test at a roadblock.
Professional drivers in South Africa are defined as those who drive for a living and possess a Professional Driving Permit (PrDP). This includes bus, taxi, courier, and truck drivers.
It's important to note that alcohol affects everyone differently, and factors such as weight, height, and metabolism can influence how the body processes alcohol. As a general guide, one unit of alcohol consumed within an hour can place a professional driver over the legal limit. A unit is typically defined as 0.02 g/100 ml (0.02% BAC) in the blood or 0.10 mg/l of breath. Examples of drinks containing one unit of alcohol include 2/3 of a can of beer, 75 ml of 14% red wine, 90 ml of 12% white wine, or 25 ml (1 tot) of 43% spirits.
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Blood Alcohol Concentration (BAC)
In South Africa, the legal Blood Alcohol Concentration (BAC) limit for drivers on public roads is less than 0.05g of alcohol per 100 millilitres of blood (0.05% BAC). This is equivalent to approximately 2 to 3 units of alcohol consumed within an hour for a person of average weight and height. For professional drivers, the BAC limit is lower, at less than 0.02g of alcohol per 100 millilitres of blood (0.02% BAC), which equates to approximately 1 unit of alcohol consumed within an hour for a person of average weight and height.
It is important to note that alcohol affects individuals differently, and factors such as weight, height, age, sex, metabolism, and food consumption can influence how the body processes alcohol. As a result, it is challenging to provide an exact number of drinks that would place an individual at or below the legal BAC limit. However, it is recommended to restrict oneself to one unit of alcohol per hour to allow the body to process it and maintain sobriety according to the law.
The BAC limit in South Africa has been a subject of discussion and change over the years. In 1996, the BAC limit for drivers was reduced from 0.08% to 0.05%. Despite this reduction, road fatalities remain a significant concern, with 38-60% of the 12,921 road fatalities in 2018 attributed to pedestrians, and alcohol involvement in 51% of these cases. As a result, the South African government has proposed further reducing the BAC limit to 0%. However, it is important to note that a 0% BAC limit is rarely implemented in Western democracies and is typically restricted to new or inexperienced drivers if applied at all.
The enforcement of BAC limits and the detection of intoxicated drivers are crucial aspects of road safety. In South Africa, there has been an increase in roadblocks and checkpoints to discourage drinking and driving. However, a study found that only 6.7% of drivers who consume alcohol before driving are arrested for DUI, and less than 50% are detected at roadblocks. This highlights the need for improved enforcement and detection methods to address the issue of intoxicated driving effectively.
To comply with the legal BAC limit in South Africa, individuals should be mindful of their alcohol consumption and the time needed for their body to process it. Planning alternative transportation when consuming alcohol is always a prudent decision to ensure the safety of oneself and others on the road.
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Breath Alcohol Concentration (BrAC)
In South Africa, the legal Breath Alcohol Concentration (BrAC) limit for drivers on public roads is 0.24 milligrams of alcohol per litre of exhaled breath. This is equivalent to a Blood Alcohol Concentration (BAC) of 0.05g of alcohol per 100 millilitres of blood. For professional drivers, the BrAC limit is 0.10 milligrams per litre of exhaled air, which corresponds to a BAC of 0.02g per 100 millilitres of blood. These limits translate to approximately 2 to 3 standard units of alcohol consumed within an hour for non-professional drivers and about 1 unit for professional drivers. It's important to note that these estimates are for individuals of average weight and height.
BrAC is a measure of the amount of alcohol present in the breath, typically expressed as milligrams of alcohol per litre of breath (mg/L). It is used to assess an individual's level of alcohol intoxication, especially in relation to driving under the influence (DUI). Law enforcement agencies in South Africa, such as the South African Police Service, frequently conduct roadblocks and checkpoints to deter drunk driving. If a driver is found to be over the legal BrAC or BAC limit, they will be arrested and charged with DUI.
The specific conversion between BrAC and BAC values can vary depending on the units used and individual physiological factors. However, in general, the BAC is typically higher than the BrAC due to the difference in distribution of alcohol between the blood and the breath. The ratio between BAC and BrAC can range from approximately 1:1500 to 1:2100, with the most common conversion factor being 1:2100. This means that for every gram of alcohol per 100 millilitres of blood (BAC), there is expected to be about one-two thousandth of a gram of alcohol per litre of breath (BrAC).
It's important to note that alcohol affects individuals differently, and factors such as weight, height, age, sex, metabolism, and food consumption can influence how the body processes alcohol. As a result, it is challenging to provide an exact number of drinks or units that will result in a specific BrAC or BAC level. Additionally, the BrAC level can vary depending on the type of alcohol consumed, the volume consumed, and the time elapsed since consumption. As a general guideline, it is recommended to allow sufficient time for the body to process alcohol and to avoid any alcohol consumption if driving.
To ensure compliance with the legal BrAC and BAC limits in South Africa, it is advisable to refrain from drinking and driving altogether. The consequences of drunk driving can be severe, including legal penalties, endangering oneself and others, and contributing to the high number of alcohol-related road fatalities in the country. South Africa is ranked as the sixth-highest per capita consumer of alcohol globally, and alcohol plays a significant role in road crashes, with associated costs amounting to R 18.2 billion per annum.
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Enforcement and prosecution
In South Africa, the Road Traffic Management Corporation (RTMC) State of Road Safety Report for 2018 reported 12,921 road fatalities, of which 38-51% involved alcohol where the blood alcohol content (BAC) exceeded the legal limit. In response, the government aims to reduce the BAC limit to 0%.
To enforce the legal blood or breath alcohol limit, the South African Police Service, various Metropolitan Police Departments, and other law enforcement agencies are conducting frequent road blocks and manning checkpoints to deter drinking and driving. If a driver is stopped and found to be over the legal limit, they will be arrested and charged with Driving Under the Influence of Liquor (DUI).
However, there are challenges to effective enforcement. A study by Dunne found that only 6.7% of drivers who consume alcohol before driving are arrested for DUI, and less than 50% are detected by roadblocks. In 2019, there were 82,912 DUI arrests, but in the 2012/2013 financial year, 44,526 DUI cases were withdrawn from South African courts due to issues with equipment, sample storage, and analysis.
To improve enforcement and prosecution, there is a need for legislation addressing the full spectrum of intoxication control for all road users, consistent and effective law enforcement, and a focus on successful prosecution and conviction. This includes addressing obstacles such as inadequate equipment maintenance and operation, and improving the handling and analysis of samples.
The behaviour of intoxicated road users will only change if there is a real threat of detection, prosecution, and conviction. For example, in Victoria State, a concerted BAC enforcement action, including breath testing over 24 million drivers, led to a 32% reduction in fatalities between 2011 and 2016.
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Alcohol consumption guidelines
Blood Alcohol Concentration (BAC) Limits:
- The legal BAC limit for drivers in South Africa is 0.05g of alcohol per 100 millilitres of blood (\<0.05%). This is applicable to drivers on public roads.
- For professional drivers, such as those with a Professional Driving Permit (PrDP) operating vehicles like buses, taxis, couriers, and trucks, the BAC limit is stricter at 0.02g per 100 millilitres of blood (\<0.02%).
- These limits can be translated into Breath Alcohol Concentration (BrAC) measurements, with the limit for non-professional drivers at 0.24 milligrams per litre of exhaled breath and 0.10 milligrams per litre for professional drivers.
Units of Alcohol:
- Understanding how many units of alcohol are in different beverages is crucial for staying within the legal limits. One unit of alcohol is typically equivalent to 0.02g/100ml (0.02% BAC) in the blood.
- For beer, a stronger beer with a higher alcohol percentage (e.g., 5.5%) in a 500ml can equates to approximately 2.75 units. Consuming two such beers in an hour will likely exceed the legal limit for drivers.
- For wine, 75ml of 14% red wine or 90ml of 12% white wine is equivalent to one unit.
- For spirits, a 25ml tot of a typical 43% spirit constitutes one unit.
Time Considerations:
- It's important to allow sufficient time for your body to process alcohol. On average, it takes about an hour for one unit of alcohol to be processed.
- It is recommended to restrict yourself to only one unit of alcohol per hour to maintain sobriety according to the law.
- Alcohol can remain in your system for up to eight hours after consumption, so plan accordingly if you need to drive.
Enforcement and Penalties:
- Law enforcement agencies in South Africa are actively conducting roadblocks and checkpoints to deter drinking and driving.
- If found to be over the legal limit, you will face arrest and charges for Driving Under the Influence (DUI) of liquor, which can have significant legal consequences.
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Frequently asked questions
The legal breath alcohol limit in South Africa is 0.24 milligrams of alcohol per litre of breath (BrAC).
One unit of alcohol is equal to 0.02 grams of alcohol per 100 millilitres of blood (0.02% BAC) or 0.10 milligrams of alcohol per litre of breath (BrAC). One unit is typically equivalent to two-thirds of a can of beer, 75 ml of 14% red wine, 90 ml of 12% white wine, or 25 ml (one tot) of 43% spirits.
Yes, the limit for professional drivers (those with a Professional Driving Permit (PrDP) who drive for a living) is less than 0.02 grams of alcohol per 100 millilitres of blood (0.02% BAC) or 0.10 milligrams of alcohol per litre of exhaled air (BrAC).
If you are found to have consumed more than the legal limit of alcohol while driving, you will be arrested and charged with Driving Under the Influence of Liquor.
