Two souvenir Olympic bus tickets with an image of the Bird's Nest against a yellow background. [Photo: china.com.cn]

Three million bus tickets emblazoned with Olympic designs are on sale on all Beijing bus routes as of Friday, when the Olympics open.

A total of four versions of souvenir tickets are now available. Passengers can pay one yuan for a ticket printed with images of the Bird's Nest and the Water Cube on a blue or yellow background, website china.com.cn reports.

Transport IC card holders must pay cash for their purchases, the report says.

（CRIENGLISH.com August 8， 2008）