This blog has been written by The Flood Hub People.
Heavy downpours, prolonged rainfall and blocked or overwhelmed drainage systems can all contribute to the flooding of roads. Flooding can hit fast and cover large areas with water quickly, causing disruption to travel and possibly danger to life.
Flooded roads are a serious hazard, especially during heavy rainfall, prolonged storms or when drainage systems are blocked or overwhelmed. Urban areas with extensive hard surfaces, such as roads, pavements and car parks, struggle to absorb rainwater naturally. Combined with the limited capacity of sewers and drainage systems, this can result in standing water on streets, lanes and motorways that can persist for hours, disrupting travel and putting drivers at risk.
Driving in floodwater is extremely dangerous. Even shallow water can cause your vehicle to lose traction, stall, or be swept away, and deeper water can hide hazards like missing manhole covers, potholes or debris. Ideally, you should avoid driving in flooded conditions whenever possible. Move your vehicle to higher ground if it’s safe to do so, and plan your journeys around weather warnings and flood alerts.
Check the News and Warnings
Stay informed with the latest local weather forecasts from the Met Office and flood alerts from the Environment Agency. Regional news bulletins also provide updates on road closures and areas prone to flooding. Knowing which roads are safe or unsafe before setting off can prevent unnecessary risk.
Delay Your Journey
If possible, postpone your journey until conditions improve or choose an alternative route that avoids flooded areas. Heavy rainfall often causes slow-moving traffic, so factor in extra travel time if you must travel.
Knowing how water depth affects vehicles is critical:
If you absolutely must drive through water, follow these safety tips:
Speed
Drive slowly, around 3–4 mph, to maintain control and minimise bow waves that could flood nearby properties or other vehicles. Low speeds also reduce risk to pedestrians, who may be in or near floodwater.
Distance
Leave extra space between you and the vehicle in front. Wet conditions increase stopping distances, and unexpected hazards in floodwater may require sudden braking.
Steering and Aquaplaning
If your car begins to aquaplane (when tyres lose contact with the road) hold the wheel lightly and gradually ease off the accelerator. Do not brake suddenly. This helps regain traction safely.
Prepare for Emergencies
Keep your mobile phone charged and carry an emergency kit with essentials like water, food and warm clothing. Be prepared for breakdowns or being stranded.
Click here to download our driving in flood water resource
Sources: RAC, Green Flag SMART DRIVING, AA
