Driving in floods is one of the most dangerous situations a motorist can face. In places like Singapore where heavy rainfall is common, the risk of flash flooding is very real. Urban drainage systems are generally efficient, but intense rain can overwhelm them, particularly in areas with poor drainage or near low-lying spots.
According to PUB, about 30% of Singapore is less than 5 meters above sea level and is most vulnerable to flooding. Flash floods can occur with little warning, leaving drivers with limited time to react. A small car can be swept away in just 30 cm of fast-moving water, while as little as 15 cm can knock a person off their feet.
Flooding can harm a car’s electrical system. When water gets into important parts with wires, sensors, or the battery, it can cause rust, damage, and short circuits. This might result in warning lights on the dashboard, non-working electronics, or even engine issues.
Even in a city as prepared as Singapore, no system is foolproof, and it’s crucial for motorists to know how to stay safe. Here are some practical tips on how to stay safe if you ever find yourself driving in floods.
Avoid Driving Through Floodwater
Floodwaters can be deceptively dangerous, hiding potholes, debris, or submerged drains. Water as shallow as 15 cm can make a driver lose control or cause the car to stall or break down. At 30 cm, the car might start to float.
If you encounter a flooded road, do not attempt to drive through it. Instead, assess the situation and look for an alternative route before reaching the flooded area, even if it adds time to your journey. Remember, the saying “Turn around, don’t drown” isn’t just a warning, it’s a lifesaver.
Stay Updated on Weather Alerts
Weather conditions can change rapidly, and being informed is important. Before heading out, check real-time updates from reliable sources like the Meteorological Service Singapore or weather apps.
Singapore’s Public Utilities Board (PUB) provides valuable resources through their Telegram channel and Get Flood Wise initiative. They provide real-time flood alerts and guides for staying safe during heavy rainfall.
Be cautious in flood-prone areas such as Bukit Timah, Orchard Road, and areas near major canals like the Alexandra and Rochor canals. This is important during a ‘flood warning,’ which indicates severe flooding. If possible, avoid driving altogether unless absolutely necessary.
Navigating Floodwaters Safely
If a flooded road is unavoidable and you have assessed it to be passable, take extra precautions:
- Drive slowly and steadily, avoiding sudden braking to maintain higher, constant engine speed and prevent aquaplaning.
- If your car is aquaplaning, stay calm and avoid sudden movements. Ease off the accelerator gently and steer straight until your tyres regain traction. Do not brake suddenly, as it can make the situation worse.
- Stick to the middle lane where water levels are usually lower, as water tends to accumulate on the side lanes.
- Proceed one vehicle at a time to minimise waves and prevent water from entering the engine or exhaust, which can cause stalling.
These steps can reduce your risk but always prioritise finding an alternative route.
What to Do If Your Car Stalls in Flood Water
If floodwaters rise around your car and stall the engine, do not attempt to restart it. Restarting can cause irreversible damage. Instead:
- Turn on your hazard lights to alert other drivers.
- Call for roadside assistance immediately.
- Exit the vehicle safely and move to higher ground if the water level is rising.
Once out of the flood, tap your brakes gently to help dry them and test them before driving further. Safety checks like these ensure your vehicle is ready for the road again.
Know When to Abandon Your Car
When water rises around your vehicle, your instinct may be to stay put, but this can be life-threatening. Vehicles begin to float in just 30 cm of water, and strong currents can sweep them away.
Once the water reaches the bottom edge of the car door, abandon your car and seek higher ground immediately. Do not wait for the water to subside. If the current is too strong to leave safely, remain inside, keep calm, and call for help. Always prioritise your safety over material possessions.
Avoid Standing in Moving Floodwaters
Singapore’s urban environment may lead some motorists to leave their cars during a flood to assess the situation. However, moving floodwater is far stronger than it appears. Even ankle-deep water can knock you off balance, and deeper currents can sweep you away.
If you find yourself outside your vehicle, avoid walking through the water. Instead, find a sturdy object to hold onto and wait for assistance.
Prepare an Emergency Flood Kit for Your Car
An emergency kit is essential for driving safety, particularly during Singapore’s rainy season. Include these key items in your car:
Store these items in a waterproof bag, ensuring they are within reach. Do not store them in the boot, so you can access them quickly in an emergency. Check the kit regularly to ensure everything is in good condition.
Stay Calm and Think Ahead
Staying calm can make all the difference when faced with a flood situation. Take a moment to assess your surroundings and consider the safest action. If you’re unsure, waiting for help or finding an alternate route is better.
Roadside Assistance
The Automobile Association of Singapore (AA Singapore) offers members emergency roadside assistance. Services under roadside assistance are towing and vehicle recovery like vehicle jumpstart/restart, battery replacement, flat tyre change, and petrol delivery. Visit our website or call 6748 9911 to find out more.
