HOLIDAY ROAD SAFETY: SANBWA WARNS THAT EVEN MILD DEHYDRATION CAN IMPAIR DRIVING THIS FESTIVE SEASON
As millions of South Africans prepare for long-distance travel this December, the South African National Bottled Water Association (SANBWA) is sounding the alarm on an often-overlooked danger: dehydration behind the wheel. While motorists typically focus on vehicle checks, fatigue breaks and speed limits, emerging global research suggests that hydration should be considered just as crucial for road safety.
With festive-season traffic expected to peak on major highways, SANBWA is urging drivers to recognise hydration as a core component of responsible driving—especially during South Africa’s increasingly hot summer conditions.
Mild Dehydration = Major Driving Impairment
Studies from Loughborough University, the University of Connecticut and European transport institutes have consistently shown that even a 1–2% drop in hydration can significantly affect driving performance. Research participants who were mildly dehydrated demonstrated:
- Slower reaction times
- Reduced concentration
- Poor judgement
- Increased lane drifting
- Delayed hazard recognition
- Difficulty maintaining consistent speed
In controlled simulations, dehydrated drivers committed as many errors as those with a blood alcohol content of 0.08%—the legal limit in many countries.
Heat, Stress and Long Trips Increase the Risk
SANBWA CEO Charlotte Metcalf says these findings are especially relevant in South Africa, where holiday travel includes long distances, high temperatures and heavy traffic.
“We think of dehydration as something that happens when you exercise, but it also affects people sitting still in a car for hours. Heat trapped inside vehicles, caffeine intake and the general stress of driving all accelerate fluid loss. Many motorists treat hydration as optional, when in reality it directly affects alertness, decision-making and reaction time.”
she explains
Children, older adults and travellers with pre-existing medical conditions face an even higher risk. Symptoms such as headaches, dizziness, fatigue and difficulty focusing may appear long before someone feels thirsty—making dehydration easy to overlook.
Simple Hydration Habits Can Save Lives
SANBWA’s message to festive-season travellers is clear: drink water consistently before and during your trip. Their recommended hydration strategy includes:
- Sip small amounts of water frequently
- Keep safe, clean drinking water in the vehicle
- Hydrate before you feel thirsty
- Avoid sugary drinks or stimulants that may worsen dehydration
Because water quality matters, SANBWA encourages motorists to choose bottled water carrying the SANBWA logo, which guarantees that the water meets strict safety, microbiological and environmental standards.
Environmental Responsibility on the Road
With increased travel comes increased consumption—and SANBWA reminds holidaymakers to recycle every bottle. PET bottles from SANBWA members are 100% recyclable and fully compatible with South Africa’s mechanical recycling system.
Travellers are urged to avoid littering along highways, rest stops and natural areas. Proper recycling keeps plastic in the value chain, supports local recycling industries and reduces environmental pollution.
Hydration: An Essential Part of Road Safety
As families gear up for festive journeys, SANBWA encourages motorists to make hydration part of their safety checklist. Pack enough water for all passengers, take breaks every two hours, and drink steadily throughout the trip.
“Staying alert isn’t only about avoiding alcohol or fatigue. Hydration is a proven, science-backed part of road safety. A few sips of water at the right time can save lives.”
Metcalf adds
