من یک لندنی هستم که همیشه سوار مترو هستم. در اینجا 10 ویژگی از Underground است که اکثر آمریکایی ها را شگفت زده می کند.

I'm a Londoner who always rides the Tube. Here are 10 features of the Underground that would surprise most Americans.

The author travels on the London Underground — or Tube — several times a day. Roya Shahidi Known as the Tube, the London Underground is an essential part of everyday life for most Londoners. Some of its characteristics are uncommon in American subway systems and can be confusing. From unwritten etiquette rules to fare must-knows, here are some surprising things about the Tube. While it's ridiculously busy at rush…