In my country, we have the Glasgow Subway - the third oldest underground railway in the world after London and Budapest. It opened in 1896. It's a single circular six-and-a-half mile line running through the Inner City from the city centre out along the south bank of the Clyde to Govan and through the west end of the city to Partick.

Today, it is not an entirely practical system of transportation, seeing as the inner city of Glasgow has been thoroughly deindustrialised, and even stripped of the old tenement housing it was famous for in most parts. This is particularly a problem on the south side of the Subway, where stations like West Street get less than 100,000 entries and exits a year. Govan is the site of the famous docks and shipyards of a bygone era, now closed, but is still residential. Ibrox, one stop east of Govan, is most used on Saturdays as it is just yards away from Ibrox Stadium - home of Glasgow Rangers FC. The north side of the system is far busier, with it being used nowadays during weekdays for students and academics commuting to the University of Glasgow, as well as being far more residential. So in this regard, it is clear that the Subway was intended for commuting to the heavy industries along the banks of the Clyde, and hence it is not very effective in this nowadays as industrial employment along the Clyde has declined.