RFID is being employed to track the maintenance of escalators used by passengers of the London Underground subway system. Once the application is completely rolled out, at the end of 2010, some 30,000 tags will be attached to the steps of 200 escalators. If an escalator suddenly ceases running during rush hour, those aboard it can be seriously injured by the crowd. The application helps improve escalator safety via providing a more efficient maintenance process.
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