Drivers warned 30cm of water can sweep cars away on poorly maintained roads
Gauteng motorists are being warned to take extreme care as heavy rains hit the province. With poor roads, blocked drains, and floodwaters, even small amounts of water can be deadly.
Johannesburg is bracing for heavy rain and thunderstorms with the South African Weather Service warning of potential flooding across Gauteng on September 29.
Residents are being urged to take extreme caution on the province’s often-poor roads, where potholes, blocked drains, and uneven surfaces can make even small amounts of water deadly.
According to the National Sea Rescue Institute (NSRI), just 15cm of fast-moving water can knock over an adult, 30cm can move a car, and 45cm can carry most vehicles away.
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Floodwaters can also hide washed-out roadways, sinkholes, and other hazards, making even familiar routes dangerous.
That is why JMPD spokesperson Xolani Fihla stressed the importance of adjusting driving habits in wet conditions.
“Rain significantly reduces traction and increases the distance it takes to stop. Drive well below the speed limit and ease off the accelerator, especially around bends.
“In wet conditions, you should leave at least double the space you normally would between your car and the one in front of you. This gives you more time to react and brake safely if needed.”
Fihla added that motorists should ensure that their tyres have good tread depth and are properly inflated. He said good tyre tread pushes water away from the road surface, reducing the risk of aquaplaning, when a car skids because a layer of water separates the tyres from the road.
“Even if it’s just a drizzle, turning on your low-beam headlights makes your vehicle much more visible to other drivers. If the rain is heavy enough to require your wipers, your lights should be on.
“Check that your windscreen wipers are in good condition and can clear the glass effectively. Also, use your car’s defogger (or air-conditioning) to keep your windows clear and maintain maximum visibility inside the cabin.”
The NSRI has also issued warnings regarding the dangers of flooding. Andrew Ingram, NSRI communications manager, said flooding doesn’t always look dangerous, but it often is.
“When in doubt, turn around. We urge the public to treat all floodwaters as a real threat to life. Let’s work together to prevent unnecessary tragedies.”
Ingram advises drivers to slow down, increase following distances, use headlights and functioning wipers, stay alert, and avoid distractions.
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“Motorists should also be aware of the risk of hydroplaning; if the vehicle begins to slide, they should ease off the accelerator and steer gently rather than braking harshly.”
When encountering flooded roads, Ingram said, “Turn around, don’t drown. Never attempt to drive through flooded roads. Even shallow water can hide washed-out roadways or deep sinkholes.
“Blocked or overflowing stormwater drains increase the risk further, so drivers are urged to take alternate routes and avoid low-lying underpasses where water collects.”
He said if a vehicle stalls or becomes submerged, occupants are advised to unfasten seatbelts, open windows, unlock doors, and exit immediately, moving to higher ground.
“Those trapped should call emergency services on 112 and provide precise location details.”
The NSRI also reminds residents to monitor alerts from the South African Weather Service and to share only verified emergency updates.
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