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Openai/69174972-28c8-8010-8b17-efcb4a6a090f
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==== 🚗 為什麼「增加車道寬度」無法長期改善壅塞? ==== ===== 1. 誘發交通(Induced Demand) ===== 研究顯示,只要你擴寬道路、增加車道,開車的人就會變多,最終又回到同樣堵塞的程度。 這是全球各地的經驗,包括美國的高速公路(例如加州的 405、德州的 Katy Freeway)都驗證過。 ===== 2. 空間佔用效率低 ===== 私人汽車在城市道路的空間使用效率極低: * 一輛車通常只載 1–2 人 * 占用大量道路面積 因此擴寬車道只能短暫提升通行量。 ===== 3. 城市會變得更依賴汽車 ===== 一旦給汽車更多空間,人們就更不願意步行或使用大眾運輸,形成惡性循環,使交通更糟。
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