A motorcyclist was taken to hospital after he crashed on a slip road.
Emergency services were called to a crash on the A41 near the Berrygrove roundabout with the M1 in Watford at 2.15pm on Sunday.
Police say a motorbike was the only vehicle involved and an air ambulance was sent to the scene.
The rider was taken to hospital head and shoulder injuries.
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A spokesperson for Hertfordshire Constabulary said: “Police were called at 2.15pm on Sunday (7 August) to report a single vehicle road traffic collision on the entry slip road of the A41 near the Berrygrove Interchange.
“A motorbike was involved. Officers and the East of England Ambulance Service, including the air ambulance, attended.
“A man, aged in his 30s, was taken to hospital by land ambulance with head and shoulder injuries. The injuries were not thought to be life-threatening.
“Road closures were in place while the incident was dealt with.”
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