Per the New York Daily News, on weekdays, only 74% of trains arrive on time at terminals. Spencer Platt/Getty Images hide caption

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Christian Tengblad (right) and his fellow fare dodger are part of the group Planka.nu. Ari Shapiro/NPR hide caption

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Smoke inhalation victims walk past a firefighter towards a medical aid bus Monday after passengers on the Washington, D.C., subway were injured when smoke filled the L'Enfant Plaza station during the afternoon rush hour. Paul J. Richards/AFP/Getty Images hide caption

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Going, going, gone. You won't find azodicarbonamide in Nature's Own products. And Subway is phasing it out, too. But lots of manufacturers are still using the additive. Meg Vogel/NPR hide caption

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Sandwich chain Subway has announced plans to drop the additive azodicarbonamide from its fresh-baked breads. Above, Subway founder Fred DeLuca poses carrying bread for sandwiches. Jonathan Nackstrand /AFP/Getty Images hide caption

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A Marmaray Project train awaits its inauguration ceremony in Istanbul on Tuesday. Ozan Kose/AFP/Getty Images hide caption

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Saudi women get into a taxi outside a shopping mall in Riyadh in 2012. Plans for a subway system in the Saudi capital are likely to provide the biggest benefits to women and the poor. Fayez Nureldine/AFP/Getty Images hide caption

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