A Signs and Artwork

How is this for a sign? Found on a street in Taipei, Taiwan, as we travelled on the tour bus to our next destination. I guess it means that motor bikes can either park at 90 degrees or parallel to the curb.

There is also some interesting artwork in the shop front windows, though it is hard to decipher what it actually is. The pic was taken through the bus window as we travelled along, and that artwork is behind another layer of glass, so it is a little hard to see. I would have liked to have a close look though.