在學校外圍的人行道，特別是設有機車停車區的路段，經常成為家長或補習班接送者的等待場所。由於空間遮蔽性高、交通流動性大，吸菸者往往選擇在此短暫停留並抽菸，導致地面煙蒂大量累積，成為社區中難以察覺但普遍存在的污染熱點。這類場域不僅對環境造成傷害，也提高接觸二手菸與地面污染物的風險。透過記錄與視覺標示，希望提升居民對空間污染的感知，也為公共設施配置（如煙灰桶、禁菸標示）提供決策依據。
Sidewalks outside schools, especially those with scooter parking areas, are often used by parents or tutors waiting to pick up students. Because these spots are partly covered and have lots of traffic, smokers often stop there to smoke. This leads to many cigarette butts on the ground, making these places hidden but common pollution hotspots in the community. These areas not only harm the environment but also increase the risk of secondhand smoke and contact with dirty ground. By recording and clearly marking these spots, we hope to raise public awareness and help plan better public facilities, like ashtrays or no-smoking signs.