The North Orbital road in London Colney is closed after an accident.
The westbound A414 has queuing traffic after a car rolled over between A1081 London Road (London Colney Roundabout) and A414 / A5183 Watling Street / A405 North Orbital Road (Park Street Roundabout).
An air ambulance and land ambulance attended the scene at 1.03pm and the female driver was taken to Luton and Dunstable University Hospital.
She sustained cuts and abrasions and her injuries are not thought to be life threatening.
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