サンフランシスコではたばこポイ捨てはOK らしい cigarettes butts san francisco civil code これで探すと http://www.sfexaminer.com/sfs-cigarette-litter-fee-packs-sold-increases-60-cents/ San Francisco’s fee on cigarette sales to pay for cleaning up litter has increased 50 percent for a total of 60 cents per pack. Around 12 million packs of cigarettes are sold in San Francisco annually, and a large portion of those smoked butts — and packaging like plastic wrap and foil — end up strewn across The City. During the downturn in the economy, pre-tech boom, The City approved the fee for a revenue boost for cleanup of city streets. Other such fees were explored but never moved forward, such as a fast food fee, to clean up that debris. たばこ吸う人がそこらに捨てることを前提に値段(Tax)を設定しているようですね。 これはマナーの問題なようです。
記事の 一番 うえのコメント Unsaid is that the butts dont lay on the street - they wash untreated into San Francisco Bay by the tens of thousands. Come on, writer - that's the issue that 'SF Baykeeper' built its reputation on.