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An overturned car is causing delays on the A2.
Traffic is queueing between the A2018 Old Bexley Lane, near Dartford, and the M25 J2 for the Darenth Interchange.
Motorists are facing delays of 40 minutes.
National Highways expects things to be cleared by around 3.15pm.
Police have been contacted for more information.
There is also queuing traffic on the M25 anticlockwise at junction 1B for Dartford because there is a lane closed on exit slip road due to broken down van.