it is called the "jiāo tōng kǎ"

it is called the "jiāo tōng kǎ" （交通卡）, in case you need to ask to buy or use one.

jiāo tōng (交通) = transportation/traffic
kǎ (卡) = card

Posted by wendy at 2007-12-05 14:14:30
Commented on
Shanghai Public Transportation Card