Avon & Somerset Police are appealing for anyone who may have filmed yesterday's race to contact them. They say video of the Severn Bridge Road Race could help with their enquiries into the fatal crash.
They are asking people to contact the collision investigation unit on the force number 101.
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Some 20% of carriageways in England and Wales have less than five years of life remaining before they become unusable, researchers said.
Icy conditions expected after a freezing night. The far west will enjoy sunny spells while the rest of the region sees increasing cloud.