- First, ask yourself - can you take another route? If not, then you need to identify how deep the flood is. If the standing water is more than six inches deep, avoid driving through it. If you are familiar with the road, you can judge the flood in relation to the kerb.
- If heavy rain was not the cause of the flood, then what was? And what impact on the road does it have? For example, if it is a burst water main, the standing water may look like a normal flood but the road surface beneath the water may be completely broken up. If you are unsure how the flood has formed, then avoid it altogether.
- Are there other vehicles similar to yours that are safely driving through? From this, make a judgement call as to whether it is safe to travel through or not.
- If the water is fast flowing, do not attempt to drive through it, as there is a real danger of your car being swept off the road.
- If you have taken everything into consideration and decide to drive through the flood, be sure to do so slowly. The best approach is to press lightly on your clutch and add gentle pressure on your accelerator to increase your engine revs. Do so without increasing your speed, in a similar way to how you would undertake a hill start. This will prevent water from entering your exhaust. If you are in an automatic car, accelerate slightly but control the speed with your brakes. When you have passed the flood, test your brakes to make sure they are dry and working properly.
- If you are in the slightest doubt, then turn around and don’t go through the flood. Often modern saloon cars have the air intake in the wheel arch, which may be below the water level. If your engine should take in water, it will immediately hydro lock and the engine will stop.
- Remember to stay alert and avoid splashing pedestrians. If this is done accidentally- even when driving through puddles at the side of the road - you could receive a fixed penalty and three points on your license for driving without due care and attention or without reasonable consideration for other road users. If deliberately done, it could be a public order offence, a court appearance and a fine.
Richard Gladman, head of driving and riding standards, said: “With the British weather the way it is, we should all be well practised at driving in the rain. Keeping your car maintained and the rubber (wipers and tyres) in good condition will help you stay safe. In the recent extremes, we have seen that standing water and floods are becoming more commonplace, so take extra care and if possible, avoid driving through standing water. If you’re in any doubt about the depth or surface underneath a flood, then it’s best not to take any chances.”