As a public transit corporation, the Société de transport de Montréal (STM) is central to sustainable development in the Montréal area. It operates, maintains and develops an efficient, integrated métro and bus network for a fair price. With 10,000 dedicated employees and partners, the STM offers users safe, reliable, efficient, user-friendly and accessible transit service. The STM recorded 365.2 million trips in 2018 and is the third largest public transit corporation in North America, after New York and Toronto. Its métro has four lines that serve 68 stations and cover 71 kilometres of underground tunnels. Its bus network has 1,807 buses that run on 225 lines and cover 500 square kilometres on the Island of Montréal. The STM’s annual budget is $3 billion, and its assets are evaluated at $26 billion. It provides over 80% of public transit service in the Montréal area.