The inaugural STC Metro line was long , serving 16 stations , and opened to the public on 4 September 1969 . The system has expanded since then in a series of fits and starts . , the system has 12 lines , serving 195 stations , and of route ( including the recently opened Line 12 ) . Ten of the lines are rubber-tyred ; instead of traditional steel wheels , they use pneumatic traction , which are quieter and cope better with Mexico City 's unstable soils . The system survived the 1985 Mexico City earthquake
1985 Mexico City earthquake
1985 Mexico City earthquake
Mexico City Metro