Meanwhile congestion has limited traffic to average speeds slower than in the days of the horse in cities as diverse as London and Milan, Utsunomiya in Japan and Trondheim in Norway.

• 同时，堵车现象在诸如伦敦、米兰、日本宇都宫和挪威特隆赫姆等城市已把交通速度限制得比当初马车时代还慢。