Société de transport de Montréal (STM) is the public transit agency serving the Island of Montreal, Quebec, Canada. Established in 2002, STM operates a comprehensive network of metro, bus, and paratransit services, facilitating mobility for residents and visitors across the city.

Metro System: STM's metro network comprises four lines with 68 stations, covering a total length of 69.2 kilometers. The system is fully underground and utilizes rubber-tired trains, offering a quieter and smoother ride compared to traditional steel-wheel systems. The metro connects key areas of Montreal, including downtown, residential neighborhoods, and commercial districts.

Bus Network: STM operates over 220 daytime and 23 night bus routes, ensuring extensive coverage throughout the island. The bus fleet includes standard, articulated, and hybrid models, equipped with features to enhance accessibility and comfort. Real-time tracking through the iBus system provides passengers with up-to-date information on bus arrivals and service changes.

Paratransit Services: STM offers adapted transportation services for individuals with disabilities, ensuring equitable access to public transit. These services are tailored to meet the specific needs of users, providing door-to-door transportation within the service area.

Fare System: STM is integrated into the Autorité régionale de transport métropolitain (ARTM) fare structure, utilizing the OPUS card—a rechargeable smart card that allows seamless transfers between metro, bus, and other regional transit services. Various fare options are available, including monthly passes, single-use tickets, and reduced fares for eligible users.

Commitment to Sustainability: STM is dedicated to promoting sustainable transportation solutions. Initiatives include the introduction of hybrid and electric buses, energy-efficient infrastructure, and programs aimed at reducing the environmental impact of transit operations.