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Wet Weather Driving Advice

With the weather taking it's inevitable autumnal turn, our friends at the RAC have written a guide to help drivers when the going gets wet.

Driving in heavy rain and flooding can be hazardous. Here are some useful hints and tips to help you prepare for wet weather.

Breakdown numbers increase during periods of wet weather as the damp causes problems with engines and electrical systems, and it is easy to flood your engine when driving through water if done so incorrectly.

If you must drive, there are a handful of steps you can take to reduce your chances of an accident or breakdown in wet weather.

Guide contents

  • How to prepare for driving in heavy rain
  • How to drive in heavy rain
  • Stopping distances in the rain
  • How to drive through water and floods
  • What to do if you breakdown in the rain

How to prepare yourself for driving in heavy rain

It's advisable to consider before you set off whether your journey is essential. If not, can it be delayed until after the rain has calmed?

If so, then plan your journey, taking care to avoid areas which are prone to flooding, and factor in extra time to allow for slower speeds and potential congestion.

It is also wise to let relatives and friends know your intended route and expected time of arrival and where possible, travel with others.

Before you go:

  • Check that your windscreen wipers are fully functional. If front or rear are not clearing the glass, replace them.
  • On an older vehicle, it might be advisable to upgrade to so-called ‘aero' wipers, which are more effective at removing water from the windscreen, particularly at speed
  • Try to fill up with fuel before you travel, as getting stuck in traffic will increase your fuel consumption - Remember, with the lights, heater and wipers switched on, your fuel economy will reduce even further
  • Listen out for local news bulletins to keep up-to-date with road closures, flooding and forecasts
  • Carry a mobile phone in case you encounter any difficulties during your journey
  • Check that your tyres are of the recommended legal tyre tread depth so you can be sure you have a safe amount of grip on the roads. The legal limit of 1.6mm is not enough!
rain windscreen

How to drive in heavy rain

  • Simply, slow down! Reduce your speed and leave more space between you and the vehicle in front as stopping distances in the rain increase dramatically
  • Use dipped headlights so that other drivers can see you more easily
  • Don't use rear fog lights. They can mask your brake lights and dazzle drivers behind you
  • Large or fast-moving vehicles create a spray which reduces visibility; be wary when near these vehicles.
  • Also remember to keep your air conditioning on, as this will stop your windows from misting up
  • Listen out for local news bulletins to keep up-to-date with road closures, flooding and forecasts
  • If you break down in torrential rain keep the bonnet closed while waiting for help to arrive, to avoid the electrical system getting soaked
  • Driving too fast through standing water could lead to tyres losing contact with the road. If your steering suddenly feels light, you could be aquaplaning. To regain grip, ease off the accelerator, do not brake and allow your speed to reduce until you gain full control of the steering again
  • Driving fast through deep water can cause severe and expensive damage
  • Be considerate to other road users and try not to spray pedestrians and cyclists as you drive through water

Heavy rain may lead to large puddles, areas of standing water and even flooding; if you have to negotiate these types of conditions on the road, read below for our advice on how to drive through deep puddles.

Stopping distances in the rain

The Highway Code states that stopping distances will be at least double in wet weather because your tyres will have less grip on the road.

Reduce your speed and leave more space between you and the vehicle in front to account for greater stopping distances – remember the two-second rule? Well, increase it to four if it begins to pour.

How to drive through water and floods

"Puddles" may conjure an image of a small drop, but some can develop into sizeable bodies of water.

Incorrectly driving through these puddles could cause severe damage to your car, not to mention cost an extortionate amount to repair.

As a result, we've put together some top tips for driving through them:

  • Size up the puddle first – even if it means you have to stop your car and get out (getting a bit wet is a lot better than being left stranded). If the water is muddy, you might not be able to see the bottom and gauge its depth. Try and find a stick or an object to find the lowest point.
  • If it's too deep for your car, find another way to your destination. Modern vehicles' door seals are good and keep water out, but this can make a vehicle buoyant, meaning it could begin to float if the water gets too deep, leaving you stranded. Even in this instance, the water will eventually find its way into the vehicle.
  • If the puddle is shallow enough to drive through, try and spot any objects that may cause damage to your car's wheels, tyres or suspension, potentially leaving you mid-puddle with a problem. This way, you can pick a safe path across.
  • Once confirmed, you can drive through the puddle and determined your route, keep your vehicle in a low gear (second is generally adequate) and engine revs up; this will help you maintain momentum when you travel through the puddle, creating a bow wave, so you don't get bogged down.
  • Once you exit the other side – and especially if the puddle is on the deep side – pause for a moment if you can to let any excess water drain away and flow back to where it came from.
  • If you can't, be aware that grip levels on the road ahead will diminish, as fluid from the puddle is dropped along the Tarmac by other cars.
  • It's always worthwhile to gently brush your brake pedal on exit, creating some friction and therefore heat to evaporate off any excess moisture. Some luxury vehicles can sense when you've navigated a puddle and automatically do this for you, keeping braking performance as effective as possible.

Shallow puddles are not the most arduous obstacles to overcome, but it's still important to remember that on the other side of a puddle grip levels could be lower. Adjust your speed to suit the depth of the water, too.

If the obstruction is deeper, take more time and care when crossing it. A few minutes planning could save you plenty of time – and money – in having your car repaired. And never attempt to drive through fast-flowing water – you could easily get swept away.

What to do if you breakdown in the rain

All Ford vehicles sold at Bridgend Ford come with comprehensive UK and European Roadside Assistance; furthermore, if you have your vehicle maintained with us, we will renew your Roadside Assistance cover completely free.

If you do breakdown, you may use the following numbers, your contact Roadside assistance through the Ford Pass app:

In the UK you should call: 0800 111234 or Ford One Call on 0203 5644444

In any other European country, you should call: 00800 88776611 or +33 4268781

RAC statistics show breakdown numbers increase significantly during periods of wet weather, as the damp causes problems with the engines and electrical systems, particularly in older vehicles.

If your engine cuts out after driving through deep water, do not attempt to restart it, as engine damage may occur – instead, turn on the hazard lights, call for assistance and have the vehicle professionally examined.

Catastrophic flood-related engine damage is typically caused by water being sucked into the engine, which causes the engine to lock up (mechanics call it an ‘airlock') and can in turn damage important engine components such as piston connecting rods and valves.

This inevitably means a new engine will require fitment, but what people generally don't understand is that it is the owner who is likely to have to foot the expensive repair bill unless they can demonstrate to their insurer – like in an accident – that it was not their actions that caused the damage.