Three lanes of the M25 by Maple Cross are closed after a crash involving a skiploader and a car.
Emergency services were called at 7.58am to the smash just before junction 17 and the driver of a white Vauxhall Corsa has been taken to hospital.
Traffic is queuing back to junction 16, M40, and the three outside lanes remain closed.
The skiploader has been moved to the hard shoulder and is awaiting recovery.
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