Map of Muni Metro subway/light rail/streetcar system in San Francisco, omitting Central Subway tunnel (under construction as of 2016) and current routing for T-Third.
Own work, derived from sources listed below:

Muni Metro Map. San Francisco Metropolitan Transportation Agency (12 July 2007). Retrieved on 20 March 2016.
File:Muni Metro.png: RickyCourtney
File:Muni Metro unofficial map.pdf: Isaac Fischer
File:Caltrain logo.svg: Caltrain
File:Bart-logo.svg: unknown author
Mliu92