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In this picture taken on April 6, 2017, a worker climbs onto a pile of Ofo shared bicycles at a repair centre in Beijing. A booming rental bike business has flooded China's streets with packs of cyclists, but their habit of going the wrong way and abandoning their rides anywhere is causing havoc. The authorities, scrambling to catch up, are considering new regulations to curb the chaos -- from capping the number of bikes to even barring people they consider too big or too small for bicycles. / AFP PHOTO / Nicolas ASFOURI / TO GO WITH China-technology-culture-cycling, FEATURE by Joanna CHIU (Photo credit should read NICOLAS ASFOURI/AFP/Getty Images)

In this picture taken on April 6, 2017, a worker climbs onto a pile of Ofo shared bicycles at a repair centre in Beijing. 
A booming rental bike business has flooded China's streets with packs of cyclists, but their habit of going the wrong way and abandoning their rides anywhere is causing havoc. The authorities, scrambling to catch up, are considering new regulations to curb the chaos -- from capping the number of bikes to even barring people they consider too big or too small for bicycles. / AFP PHOTO / Nicolas ASFOURI / TO GO WITH China-technology-culture-cycling, FEATURE by Joanna CHIU        (Photo credit should read NICOLAS ASFOURI/AFP/Getty Images)