In 1970, the Montreal Urban Community (MUC) was created. This group was made of municipalities that occupy the Island of Montreal and the city of Montreal was the biggest participant. MUC's mission was to provide standardized services at a regional level, one of them being transportation. The MUC Transportation Commission was thus created at the same time to serve as prime contractor for the Metro extensions. It merged all island transport companies and became the Société de transport de la communauté urbaine de Montréal (STCUM) in 1985 and then the Société de transport de Montréal (STM) in 2002.