Trams, Subways and Urban-rail...

http://mic-ro.com/metro/news.html , http://www.urbanrail.net

https://en.wikipedia.org/wiki/List_of_metro_systems#List

https://www.google.ca/search?q=subways+of+the+world&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwjogpLIvaXKAhUS5WMKHdzyApIQsAQINw&biw=1280&bih=699

http://www.urbanrail.net/au/melb/melbourne.htm-
http://www.urbanrail.net/au/melb/melbourne-map.htm