They never did. The flag disappeared eventually, though I received no confirmation.
（二）在边远、水上、交通不便地区，旅客列车上或者口岸，公安机关及其人民警察依照本法的规定作出罚款决定后，被处罚人到指定的银行或者通过电子支付系统缴纳罚款确有困难，经被处罚人提出的；
。WPS官方版本下载对此有专业解读
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Wonderfall (@w0nderfall)
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