
Todd Litman, Victoria Transport Policy Institute, Decembre 2015, 67 p. « / » https://smartasset.com/mortgage/best-cities-for-public-transportation « / » https://ggwash.org/view/71583/light-rail-heavy-rail-subway-rail-transit-modes-fall-on-a-continuum « / » https://www.globalmasstransit.net/archive.php?id=27921 « / » https://nacto.org/wp-content/uploads/2016/05/2-12_TRB-This-is-Light-Rail-Transit_2000.pdf