A crash between a motorcycle and a car on the A47 near Dereham is causing delays to traffic heading towards Norwich.
The accident happened at the junction with the B1146 Draytonhall Lane at noon.
Police said the motorcyclist was conscious but complaining of injuries on the left-hand side of his body.
Police have put up diversions for vehicles wanting to join the A47 from Dereham, but traffic is following west bound on the A47 towards King's Lynn.
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