An underground sign is lit up outside Highbury and Islington station in London March 30, 2012. Transport for London (TfL), which is responsible for the majority of London's transport system, including the London Underground, expects to see an additional 500,000 passengers on the tube during the Olympics, a number that has seen many voice their concerns over whether the system can cope with the influx. Picture taken March 30, 2012. REUTERS/Dylan ...
more An underground sign is lit up outside Highbury and Islington station in London March 30, 2012. Transport for London (TfL), which is responsible for the majority of London's transport system, including the London Underground, expects to see an additional 500,000 passengers on the tube during the Olympics, a number that has seen many voice their concerns over whether the system can cope with the influx. Picture taken March 30, 2012. REUTERS/Dylan Martinez (BRITAIN - Tags: TRANSPORT BUSINESS EMPLOYMENT SPORT OLYMPICS)
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