Artist's impression of the Dartford Crossing
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Dartford Crossing changes under way

22 April 2014 Last updated at 22:12 BST

Work is beginning to remove the toll barriers at the Dartford Crossing in order to create a "free-flow" payment system.

From October motorists will pay online, by phone or by text, instead of stopping at barriers, which have been blamed for creating delays and tailbacks.

Simon Jones spoke to Conservative MP for Dartford, Gareth Johnson, and Paul Watters from the AA.