Statutory Blood Alcohol Concentration (BAC) Limits in South Africa
In the official South African computerized learner's licence examination, questions concerning impairment, driver distraction, and occupant safety are non-negotiable. The National Road Traffic Act (Act 93 of 1996), specifically Section 65, strictly codifies the statutory limits for alcohol consumption before operating a motor vehicle on a public road.
Understanding the exact legal thresholds for ordinary motorists versus professional drivers (holding a Professional Driving Permit or PrDP) is essential for passing your test and staying on the right side of traffic enforcement. If you are preparing for your computerized theory test, ensure you review the core syllabi on our official K53 Rules of the Road guide.
1. Ordinary Drivers (Light Motor Vehicles, Motorcycles)
For standard drivers operating Code A, A1, B, or EB vehicles (including passenger sedans, hatchbacks, and light delivery bakkies):
- Blood Alcohol Concentration (BAC): Less than 0.05 grams per 100 millilitres of blood (< 0.05g / 100ml).
- Breath Alcohol Concentration (BrAC): Less than 0.24 milligrams per 1,000 millilitres of breath (< 0.24mg / 1,000ml).
Exceeding either metric places the driver in statutory violation of Section 65(2) or Section 65(5) of the National Road Traffic Act, carrying criminal prosecution, licence endorsement or suspension, and substantial fines or imprisonment.
2. Professional Drivers (PrDP Holders & Heavy Motor Vehicles)
South African traffic law imposes an exceptionally stringent standard on commercial and passenger-carrying operators under Regulation 115. This applies to Code C1, C, EC1, and EC vehicles, buses, metered taxis, minibus taxis, breakdown vehicles, and trucks transporting hazardous cargo:
- Blood Alcohol Concentration (BAC): Less than 0.02 grams per 100 millilitres of blood (< 0.02g / 100ml).
- Breath Alcohol Concentration (BrAC): Less than 0.10 milligrams per 1,000 millilitres of breath (< 0.10mg / 1,000ml).
DLTC Examiner Trap Warning: Computerized test touchscreens frequently present questions that swap units of measurement—such as pairing "0.05mg" with blood or "0.24g" with breath. Remember: Blood is measured in grams per 100ml (g/100ml), while Breath is measured in milligrams per 1,000ml (mg/1,000ml). A single flipped unit is an automatic trap answer!
Quick-Reference Alcohol Limit Comparison Table
To retain these figures under exam pressure, review this side-by-side comparison matrix based directly on Section 65 of Act 93 of 1996:
| Driver Category | Licence Codes & Classifications | Statutory Blood Limit (BAC) | Statutory Breath Limit (BrAC) |
|---|---|---|---|
| Ordinary Drivers | Code A1, A (Motorcycles), Code B, EB (Cars & Bakkies up to 3,500 kg GVM) | < 0.05 g / 100 ml | < 0.24 mg / 1,000 ml |
| Professional Drivers | Code C1, C, EC1, EC, Minibus Taxis, Buses, Goods Vehicles with PrDP | < 0.02 g / 100 ml | < 0.10 mg / 1,000 ml |
Want to benchmark your recall before stepping into the testing station? Test your knowledge immediately on our Free 64-Question Computerized DLTC Practice Simulator.
Regulation 308A: Mobile Phones and Hand-Held Communication Devices
Distracted driving is evaluated aggressively in modern DLTC question banks under Regulation 308A of the National Road Traffic Regulations. The law is absolute regarding hand-held devices:
- Total Hand-Held Prohibition: No person shall drive a motor vehicle on a public road while holding a cellular telephone or any other communication device in one or both hands or with any other part of the body (e.g., wedged between shoulder and ear).
- When Driving is Defined: Even if your vehicle is temporarily stopped at a red robot (traffic control signal) or stuck in congested traffic on a freeway, you are legally considered to be "driving." Checking messages or dialing at a red robot is a prosecutable offence.
- Legal Hands-Free Operation: You may only communicate via a phone if the device is configured with hands-free equipment integrated into the vehicle or fixed to an approved bracket mounted to the vehicle console, allowing full physical control without holding the handset.
- Engine Must Be Off in Safe Parking: To use a hand-held mobile phone legally without hands-free equipment, the motor vehicle must be brought to a complete stop off the roadway in a designated parking bay, and the engine must be switched off.
Regulation 213: Seat Belt Mandates and Child Restraints
South African traffic regulations place full statutory responsibility on the driver to guarantee passenger compliance before moving off:
- Mandatory Driver & Front Passenger Restraint: Every motor vehicle equipped with seat belts must have the driver and front-seat passenger secured by an approved seat belt assembly whenever the vehicle is operated on a public road (Reg 213(2)).
- Rear Seat Passengers: If factory-fitted seat belts are present in the rear passenger compartment, all rear passengers must buckle up. It is an offence to permit unrestrained rear passengers where belts are provided.
- Driver Liability for Minors: The driver is legally liable if any child or passenger under the age of 14 travels without wearing a fitted seat belt or without being safely secured in an approved child restraint.
- Child Restraints (SANS 1340): Under Regulation 213(6A), infants and children under the age of 3 years must be secured in an approved, rear-facing or front-facing child car seat compliant with SANS 1340 safety standards.
Before booking your exam, make sure you download the standard application documents and confirm testing slot availability via our DLTC Testing Station Finder & Free Form LL1 PDF.
Top 3 DLTC Computerized Exam Questions on This Topic
Question 1: What is the maximum statutory breath alcohol limit for an ordinary motor car driver?
- A) 0.05 mg per 1,000 ml of breath
- B) 0.24 mg per 1,000 ml of breath
- C) 0.10 mg per 1,000 ml of breath
Correct Answer: B. Regulation Section 65(5) stipulates that an ordinary driver's breath alcohol level must remain under 0.24 mg per 1,000 ml. Option A mixes up the blood alcohol number (0.05g) with breath units, while Option C is the lower limit set aside for PrDP professional operators.
Question 2: Under National Road Traffic Regulation 308A, when may a driver hold a mobile phone in their hand?
- A) While stopped at a red robot waiting for the signal to change to green.
- B) While moving slowly in heavy, stop-and-start freeway traffic.
- C) Only when the vehicle is parked in an approved parking area with the engine turned off.
Correct Answer: C. Being stopped at a robot or in slow traffic is still legally defined as driving. Holding a handset is strictly prohibited unless safely parked with the engine deactivated.
Question 3: For a professional driver operating a 16-seater minibus taxi, what is the maximum legal blood alcohol concentration?
- A) Under 0.05 g per 100 ml of blood
- B) Under 0.02 g per 100 ml of blood
- C) Exactly 0.00 g per 100 ml of blood
Correct Answer: B. While zero alcohol is always the safest operational standard, the statutory threshold enacted in Section 65(2)(b) for commercial and public transport drivers holding a PrDP is strictly less than 0.02 g per 100 ml.
Pass Your K53 Theory Exam on the First Attempt
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