South Africa does not operate a single, blanket zero-tolerance alcohol rule for every driver. What it does have is a sharply lower legal limit for professional drivers, set so close to zero that, in practical terms, a single drink can put the driver on the wrong side of the criminal law. This is the rule that most people mean when they refer to the country’s zero-tolerance alcohol policy on the roads.
The split limit sits inside section 65 of the National Road Traffic Act 93 of 1996. Ordinary private motorists are held to one prescribed blood and breath concentration, while professional drivers, who carry passengers or goods for reward, are held to another that is more than twice as strict.
This guide explains how the two limits work, who counts as a professional driver, how the rule is enforced at the roadside and in the workplace, and what the consequences are for a driver who breaches it. It is written for motorists, fleet operators, and employees in safety-sensitive roles who need to understand the law before they get behind the wheel.
The Two Legal Limits Under Section 65
Section 65 of the National Road Traffic Act 93 of 1996 creates the offence of driving, or occupying the driver’s seat of a motor vehicle with the engine running, while the concentration of alcohol in the blood or breath exceeds a prescribed limit. The Act then splits drivers into two groups, each with its own threshold.
For an ordinary driver, the prescribed limit is a blood alcohol concentration of 0,05 grams per 100 millilitres, or a breath alcohol level of 0,24 milligrams per 1 000 millilitres. For a professional driver the limit drops to 0,02 grams per 100 millilitres of blood, or 0,10 milligrams per 1 000 millilitres of breath.
The 0,02 grams per 100 millilitres figure is what is meant, in ordinary language, by the zero-tolerance rule for professional drivers. It is not literally zero, because the law leaves a narrow margin for residual alcohol, mouthwash, or some fermented foods, but it is close enough that one beer or one glass of wine will, for most adults, push the reading over the line.
Who Counts as a Professional Driver?
Professional driver status is not a matter of job title. It attaches to the licence category and to the use of the vehicle. Under the National Road Traffic Act and its Regulations, a professional driver is a holder of a professional driving permit (PrDP) who drives a motor vehicle for the conveyance of passengers or goods for reward, or who drives certain heavy vehicles, breakdown vehicles, or vehicles carrying dangerous goods.
In practical terms this captures taxi and minibus operators, bus drivers, Uber, Bolt and other e-hailing drivers, truck and heavy goods vehicle drivers, couriers driving for reward, and the drivers of breakdown and hazardous-goods vehicles. A private motorist driving the same vehicle for personal use, with no PrDP and no reward, falls under the ordinary 0,05 limit.
- Public transport drivers. Taxi, minibus, and bus operators carrying passengers for reward.
- E-hailing and ride-hailing drivers. Drivers operating on platforms such as Uber or Bolt, who drive for reward.
- Goods vehicle drivers. Truck and heavy vehicle operators, and drivers of vehicles carrying dangerous goods.
- Breakdown vehicle drivers. Operators of recovery and breakdown vehicles, who also require a PrDP.
The trigger is the combination of the permit and the reward, not the time of day or whether the vehicle is empty. A professional driver on the way back from a drop-off, with no passengers on board, is still bound by the lower limit for the whole of that journey.
Enforcement at the Roadside
Enforcement happens mainly through law enforcement measures such as roadblocks and roadside breath testing by the South African Police Service and the metro police. Where an officer forms a reasonable suspicion that a driver is over the limit, the driver may be required to submit to a breathalyzer test, and, if the reading is over the prescribed level, the driver may be arrested without a warrant under section 40 of the Criminal Procedure Act 51 of 1977.
For a professional driver the lower limit means that an arrest can follow from a reading that would be perfectly lawful for a private driver. This is the sharpest practical effect of the zero-tolerance rule: the same conduct, on the same road, produces different legal consequences depending on the category of the driver behind the wheel.
Refusing to cooperate does not end the matter. Section 65(5) of the National Road Traffic Act allows the court to treat a refusal to submit to a breath or blood test as prima facie evidence that the driver was over the limit. In practice, refusing usually strengthens the State’s case rather than weakening it.
The Workplace Dimension
The zero-tolerance principle also runs through South African workplaces, particularly in safety-sensitive industries. The Occupational Health and Safety Act 85 of 1993 places a general duty on employers to provide a working environment that is safe and without risk to health, and an employee who reports for duty under the influence of alcohol can be disciplined, and ultimately dismissed, under the Labour Relations Act 66 of 1995.
Most transport, mining, construction, and manufacturing employers operate a written alcohol policy that sets a zero, or near-zero, threshold for employees who operate machinery, drive vehicles, or work in hazardous areas. Such policies must still respect the procedural protections in the Labour Relations Act and the employer’s own disciplinary code.
Where the workplace test overlaps with a road traffic offence, for example where a professional driver is tested after a workplace incident on a public road, the driver can face both a criminal charge under section 65 and a separate disciplinary process at work. The two run on different tracks and are not interchangeable.
Penalties for Breaching the Zero-Tolerance Rule
On conviction under section 65(2), the court may impose a fine or imprisonment, or both. A conviction also results in a criminal record, and the court may endorse or suspend the driver’s licence, which for a professional driver can mean the loss of the PrDP and, with it, the loss of livelihood.
- Fine or imprisonment, or both. The court sets the sentence on the facts, including the reading and any prior convictions.
- Criminal record. A conviction under section 65 is recorded against the driver and may affect employment, travel, and firearm licensing.
- Licence endorsement or suspension. The court may endorse or suspend the driving licence, and the PrDP may be affected.
- Employment consequences. A professional driver may also face disciplinary action, up to dismissal, separate from the criminal case.
The downstream effects are often more serious than the sentence itself. For a driver whose income depends on a PrDP, a suspension can end a career, and a criminal record can close the door on future employment in the sector.
Defences and the Role of the Attorney
Defending a section 65 charge usually focuses on procedure rather than on whether the driver had been drinking. The State must prove, beyond reasonable doubt, that the driver was over the prescribed limit at the relevant time, and that proof depends on the integrity of the testing process.
Common lines of challenge include the calibration and operation of the evidential breath testing instrument, the time within which a blood sample was taken, and the chain of custody for that sample. Procedural errors in the arrest, the failure to inform the driver of constitutional rights under section 35 of the Constitution, and mistakes in the docket can also affect the admissibility of evidence.
These are technical questions. They are best examined early, by an attorney who is familiar with the format of a road traffic docket and with the case law on breath and blood evidence, before any plea is entered.
Frequently Asked Questions
What is the zero-tolerance alcohol rule for professional drivers in South Africa?
Under section 65 of the National Road Traffic Act 93 of 1996, professional drivers are bound by a lower prescribed alcohol limit of 0,02 grams per 100 millilitres of blood, or 0,10 milligrams per 1 000 millilitres of breath. This is roughly twice as strict as the 0,05 grams per 100 millilitres limit that applies to ordinary private drivers.
Who counts as a professional driver for the lower alcohol limit?
A professional driver is the holder of a professional driving permit (PrDP) who drives for the conveyance of passengers or goods for reward. This covers taxi, minibus and bus drivers, e-hailing drivers such as Uber and Bolt operators, truck and heavy goods vehicle drivers, and the drivers of breakdown and dangerous-goods vehicles.
Can a professional driver have one drink and still drive legally in South Africa?
In practice, no. The 0,02 grams per 100 millilitres limit is so low that a single beer or glass of wine will, for most adults, push the reading over the line. The narrow margin exists to cover residual alcohol, mouthwash, or fermented foods, not to permit a drink before driving.
What are the penalties for a professional driver who exceeds the zero-tolerance limit?
On conviction under section 65(2) of the National Road Traffic Act, the court may impose a fine or imprisonment, or both, record a criminal conviction against the driver, and endorse or suspend the driving licence. For a professional driver this can also affect the PrDP and lead to separate disciplinary action at work.
What happens if a professional driver refuses a breathalyzer test?
Under section 65(5) of the National Road Traffic Act, the court may treat a refusal to submit to a breath or blood test as prima facie evidence that the driver was over the legal limit. Refusing does not make the case go away and usually strengthens the State’s hand at trial.
Get help with a criminal law matter. If you are a professional driver facing a charge under section 65 of the National Road Traffic Act, or you are dealing with an alcohol-related disciplinary process at work, the Criminal Law department at Otrebski Attorneys can advise you at the police station, at the bail hearing, and through the court process. We are a 100% women-led firm with a Level 4 B-BBEE rating, rated 5 stars across 12 reviews, based from our single Sandton office, and our Director Nastasja Otrebski leads the team that defends motorists across Gauteng and South Africa.
Disclaimer. This article is general information about South African road traffic and criminal law, not legal advice for a specific matter. The prescribed limits, definitions, and penalties reflect the National Road Traffic Act 93 of 1996 and its Regulations as at the date of writing, and they may change. Outcomes in any particular case depend on the facts and on current court practice. For advice on a specific charge or workplace issue, consult a qualified attorney or Legal Aid South Africa.