HackerWhy Canadians Can't Bike in the Winter (but Finnish people can)
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讲者比较加拿大城市与芬兰奥卢的冬季骑行，把关注点从气温移到整段路是否通畅。奥卢优先路线的除雪触发条件和完成时限，让「维护良好」成为可以沿线路检查的承诺。
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the next most important element is snow removal.the priority bicycle routes are all plowed within 3 hours of a 2cm snowfall