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    Friday, 14 December 2018

    Home BBC business news BBC News - Business bussiness bussiness news How traffic lights became a million dollar idea

    How traffic lights became a million dollar idea

    December 14, 2018 , , ,
    The BBC's Aaron Heslehurst explains how traffic lights became a million dollar idea.

    from BBC News - Business https://ift.tt/2EutXVK
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