Drivers planning to use the M1 and A43 in the East Midlands are being warned to allow extra time as the MotoGP gets underway at Silverstone today.
The Highways Agency are warning that roads on the way to the race circuit will be busy throughout the weekend.
More than 55,000 people are expected on Sunday, the final day of the event.
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A sunny but chilly start. Cloud increasing with a little rain affecting northern and western areas, especially over the Derbyshire hills.
After a mainly dry, and locally chilly start, cloud will thicken, with some patchy rain possible across northern counties.
Becoming generally dry overnight with clear spells. A sunny but chilly start tomorrow. Cloud increasing with a little rain for some.