The Highway Agency is warning motorists to take extra care during heavy, thundery showers expected over the weekend.
The Met Office has issued an amber warning for rain with the risk of torrential downpours and a risk of localised flooding.
The showers are forecast to begin in the south of the country overnight on Friday and move northward throughout Saturday. The showers are expected to be localised and short, but torrential and thundery. It is possible that some of the showers will be heavy enough to cause temporary, localised flooding on some roads.
Simon Sheldon-Wilson, Director of Traffic Management at the Highways Agency, said: “With schools across the country now broken up for summer, lots of people will be taking to the roads this weekend. While this weather should not prevent people from making a journey, it’s important that drivers are aware of the forecast and drive appropriately."
Highways Agency Traffic Officers across England will be monitoring weather and traffic conditions around the clock and will respond to incidents.
Regional control centres will be monitoring CCTV cameras, answering emergency telephone calls and setting advisory signs for drivers to warn of spray and other road conditions.