Two people are in hospital with serious leg injuries after a Jaguar hit a car parked in a lay-by, leading to three others being damaged.
Two other vehicles - a Ford Focus and a Ford Mondeo - which were also parked in the lay-by were also involved in the crash, while a black Nissan Qashqai, which was travelling on the A11, was hit by debris.
The drivers of the Tigra and the Focus were both taken to hospital with serious leg injuries, while the drivers of the Jaguar and Mondeo sustained minor injuries.
The road is now fully reopen.
Anyone who may have seen the crash, the circumstances leading up to it or anyone with dashcam footage should contact PC Robert Hardingham at Wymondham traffic on Robert.hardingham@norfolk.pnn.police.uk or call 101 quoting incident number 195 of Sunday, November 22.
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