Moscow Mayor Sergei Sobyanin, left, during his visit to united Traffic Control Centre in Moscow.

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Experts monitor traffic at the united Traffic Control Centre in Moscow.

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Moscow Mayor Sergei Sobyanin, second from the left, during his visit to the united Traffic Control centre in Moscow.

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Experts monitor traffic at the united Traffic Control Centre in Moscow.

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moscow mayor Segei Sobyanin during his visit to the united Traffic Control Centre in Moscow.

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