The AA has issued an amber traffic warning for anyone using the M6, M5 and M62 this bank holiday weekend.
Families returning from summer holidays before the start of the new school year will battle for road space with festivalgoers and people embarking on day trips. The AA expects leisure traffic to peak on Saturday between 10am and 4pm and motorists are being warned to expect delays on major routes.
Predicted traffic hotspots include the M4/M5 interchange near Bristol; the M1 between the M25 and Newport Pagnell, Buckinghamshire; the M6/M42 interchange in Birmingham; and the M62 between Liverpool and Manchester.
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Monday is a bank holiday across the UK except Scotland, and is the final public holiday of the summer. AA patrol of the year Sean Sidley said: "This year we are predicting up to 15 million journeys will be made over the August bank holiday, as families make the most of the warm weather and have a last hurrah before the new school year.
"With events and festivals fully back to normal, localised congestion will peak at closing time around major venues, but the rest of the UK could see peak journeys throughout Saturday. Traffic is likely to build again from Monday afternoon and into Tuesday, so allow plenty of time if you're travelling then.
"Routes to and from coastal resorts and beauty spots will be among the busiest, so drivers should plan ahead for the journey and check your car before you go."
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