那块绿色盾牌。
Every "green shield" has an only serial number registered in operation management system. Traffic police can find out targeted taxi's information within 50-80m through the "green shield".
每个“绿盾”内都有与运政管理系统相对应的唯一编号，交通执法部门可以通过车载读写器就可以在50到80米外稳定读取车内“绿盾”的信息。
Every "green shield" has an only serial number registered in operation management system. Traffic police can find out targeted taxi's information within 50-80m through the "green shield".
每个“绿盾”内都有与运政管理系统相对应的唯一编号，交通执法部门可以通过车载读写器就可以在50到80米外稳定读取车内“绿盾”的信息。
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