From an artist's conception. Note the structural and decorative variations as compared to the Japanese Meiji rickshaw.  We know that the ickshaws are toting women because we can see their ultra-long sleeves dangling outside the rickshaw in front of the concealing curtain, a subtle hint as to the aristocratic passengers within. This picture is inspired by the Heian period (10th c. AD) novel, the Tale of Genji,  by Lady Murasaki Shikibu, said to be the first novel written by any woman in world history. There are many sites on the web about this period and author. For a start, see http://www.womeninworldhistory.com/heroine9.html