Big cities have varied and growing public transportation systems:

Metro (CDMX and Monterrey):

Fast, inexpensive and with wide coverage.

Metrobus, Macrobus or Mexibus:

Exclusive corridors in CDMX, Guadalajara, Toluca, etc.

Bus and minibus routes:

Operate in almost all cities.

Light rail and cable bus:

Additional options in CDMX and metropolitan areas.

Public bicycles:

Such as Ecobici, Mibici, etc., an environmentally friendly way to get around in some areas.