Heritage Day (24 September) is one of South Africa's busiest travel weekends, and this year it collides with school holidays — a combination that puts serious extra volume on the country's major routes. The Road Traffic Management Corporation (RTMC) has issued a warning to motorists: expect heavy traffic around popular destinations and plan accordingly.

The corporation's advice starts before you leave the driveway. Check traffic and weather conditions for your route, give yourself more time than you think you need, and make sure the car is actually up to the trip. That means checking tyres (including tread and pressure), brakes, lights, windscreen wipers and fluid levels. A blown globe or worn tyre is a minor annoyance at home but a real risk at 120km/h with a car full of kids and luggage.

On the road, the RTMC's message is the unglamorous basics that matter most: stick to the speed limit, adjust your speed for rain, traffic or poor visibility, keep a safe following distance, and skip the dangerous overtaking. Alcohol, drugs and cellphones are all named as no-gos, and seatbelts are non-negotiable for every occupant — not just the front seats.

For long hauls, fatigue is the quiet killer. Build in regular rest stops, and if you're yawning or drifting, stop. Drivers are also asked to watch out for people more exposed than they are: pedestrians, cyclists, motorcyclists and children — especially in residential areas and near recreational spots where holiday crowds gather. Parents should use appropriate child restraints and talk kids through basic road safety around busy shopping centres and transport hubs.

Why should travellers care? Because Heritage Day weekend is effectively the start of South Africa's spring getaway season, and the roads to the coast, the winelands and the bush get busy fast. Leaving early, checking your car the day before, and padding your ETA by an hour or two can be the difference between a relaxed braai on arrival and a stressful, dangerous rush. As the RTMC puts it: slow down, stay alert, arrive alive.