北京 2007.12 Creative Commons Attribution License. You may use for any purpose, but only with attribution / credit to: Karl Fjellstrom, Far East Mobility
北京城市交通
单行道 - 禁止掉头 - 路侧自行车道 - 有隔离的自行车道      
A two-way road converted to one-way, though retaining two-way bicycle access
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