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New 'green man' technology trial

7 March 2014 Last updated at 18:18 GMT

Pedestrian crossings that can detect how many people are waiting to cross a road are to be trialled in London.

The device uses technology that adjusts traffic signal timings if required, giving people longer to cross.

Transport for London (TfL) said the first trials outside Balham and Tooting Bec Tube stations would take place in the summer.

BBC London's transport correspondent Tom Edwards spoke to Mark Cracknell and Isobel Dedring from TfL.

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