Before You Leave: The Pre-Drive Check
Your journey to navigating waterlogged streets begins before you even grab your car keys. Start by checking the weather forecast and traffic updates. Several apps now provide real-time or near-real-time flood information. The Central Water Commission's
'FloodWatch' app gives advance flood forecasts for the entire country, while city-specific apps like 'MUMBAI FLOOD APP' offer hyperlocal data. If heavy rain is predicted or waterlogging is already being reported on your route, the safest decision is often to postpone your travel. If you must go, plan an alternative route that avoids known low-lying or flood-prone areas. Also, ensure your car is monsoon-ready. This includes checking that your tyres have adequate tread depth, your brakes are responsive, and your wiper blades are in good condition. A quick check of all lights—headlights, taillights, and indicators—is crucial for visibility in downpours.
On the Road: Gauging the Danger
When you encounter a waterlogged stretch, your first instinct should be to stop and assess. It's incredibly difficult to judge the depth of standing water, which can hide dangerous potholes or debris. As a rule of thumb, if the water level appears to be higher than the bottom of your car's doors or the centre of your wheels, do not attempt to drive through it. Try to observe other vehicles or pedestrians to gauge the depth. If there’s any doubt, it's safer to turn around and find another way. If you must proceed, try to stick to the centre of the road, as roads are often constructed to be highest in the middle to allow for drainage, meaning the water will be shallower there.
The Right Way to Drive Through Water
If you've determined the water is shallow enough to cross, the technique is crucial to prevent damage. Engage a low gear—first or second—and keep the engine revs high but your speed slow and steady, around 5 km/h. Maintaining high RPMs creates pressure in the exhaust pipe, which helps prevent water from entering. Drive at a constant, slow speed to create a 'bow wave' in front of your vehicle, which pushes water away from the engine's air intake. Avoid sudden acceleration or hard braking. Once you are through the water and on dry ground, gently tap your brakes a few times to squeeze out any water and ensure they are working effectively.
What to Do if Your Car Stalls
This is the most critical moment. If your car stalls in water, do not, under any circumstances, try to restart the engine. Attempting to crank the engine can suck water into the cylinders, causing a condition known as hydrostatic lock, which can lead to catastrophic and expensive engine damage. The correct procedure is to turn off the ignition completely, switch on your hazard lights to warn other drivers, and assess your safety. If the water level is rising, your priority is to exit the vehicle safely. Do not wait for the car to fill with water, as the pressure outside will make it impossible to open the doors. If you can, roll down a window and climb out.
If You Are Trapped in the Vehicle
In the rare and terrifying event that you are trapped by rising water and cannot open your doors or windows, you must act quickly. The water pressure will prevent doors from opening until the pressure inside and outside the car equalizes, which means waiting for the cabin to fill with water—a dangerous last resort. Instead, you need to break a window. Do not try to break the front windscreen, as it is made of laminated safety glass and is extremely difficult to shatter. Aim for a side window. A specialized car safety hammer is the best tool, but if you don't have one, a detachable headrest with its metal prongs can be used to strike the corner of the window, where it's most vulnerable. Once out, if it is safe to do so, get to higher ground immediately.
After the Incident: Insurance and Recovery
Once you and your vehicle are safe, contact your roadside assistance service and your insurance provider. It's important to know that standard comprehensive car insurance policies in India often do not cover engine damage resulting from waterlogging, like hydrostatic lock. You typically need a specific 'Engine Protect' add-on for that coverage, which is highly recommended for those living in flood-prone cities. Once the car is towed, do not attempt to start it. Have it assessed by a qualified mechanic who can check the engine, electrical systems, and fluids for water contamination.
