I wonder if they're trying to confuse us. Last time I got a sticker, the clerk said it depends on the street--some streets are 9 month and some are 12 month. And though I got a 12-month sticker, the year before (I lived in the same place) I got a 10 month sticker. Also, if they're coming out with new rules (someone mentioned one about removing expired stickers,) shouldn't they inform us?