More than 16 million trips are expected to be taken by motorists during this August Bank Holiday weekend.
A new study suggests today (August 23) and tomorrow are expected to be the busiest days, with a combined 9.4m trips.
The figures, released by the RAC and INRIX, also predict there will be around 3.7m separate leisure journeys on Monday (August 26).
Highways England has urged drivers to check their vehicle before setting out to avoid unnecessary breakdowns.
RAC patrol of the year Ben Aldous said: “For many people, this coming weekend is the last chance to enjoy a long weekend this side of Christmas – and with the weather improving that’s likely to mean a lot of cars on the road heading to popular tourist destinations.
“A lot of the breakdowns we expect to see this weekend are preventable, so it’s vital drivers check over their car before setting out.
"Tyres with plenty of tread and properly inflated are far less likely to cause drivers problems, and it’s crucial that oil and coolant are at the right levels too.
"All are quick, easy things to check and can save drivers the hassle of a breakdown at the roadside.”
And if you're fed up of congestion on a certain motorway, we have investigated why traffic on the M5 is so bad.
Here are the worst times to travel on major roads during the weekend
Friday (August 23): Between 11am and 6.30pm
Saturday (August 24): Between 10.30am and 2pm
Sunday (August 25): Between 12.30pm and 2pm
Monday (August 26): Between 12pm and 2.30pm
And here are the best
Friday (August 23): After 9pm
Saturday (August 24): After 4pm
Sunday (August 25): Before 10.30am, after 6.30pm
Monday (August 26): Before 11am, after 6pm
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