An study released by the State Government in 2001 showed over 1 in 4 ( 27.2 % ) of the machines at train stations did not work , and 11.9 % of mobile equipment in buses and trams was non-operational . An audit released by the State Government in 2001 showed over 1 in 4 ( 27.2 % ) of the machines at train stations did not work , and 11.9 % of mobile equipment in buses and trams was non-operational .