This package provides public transit users of the Société de Transport de Montréal (STM) with schedules, the positioning of buses in real time and, since version 2, data on the occupancy rate on board buses. *To access GTFS—RealTime and the i3 API, register on the [Developer] portal (https://www.stm.info/fr/a-propos/developpeurs) *. Note: This data set is the property of the Société de transport de Montréal. Consequently, according to the attribution clause of the Creative Commons 4.0 license, the authorship of the data must be attributed to the Société de transport de Montréal. Please contact the Société de transport de Montréal (dev@stm.info ) if you have questions about this package. The routes of bus and metro lines and the planned schedules of their trips are also [available] (https://donnees.montreal.ca/organization/societe-de-transport-de-montreal) as open data. __Warning__: the GTFS-Realtime v1 API will reach its end of life over the next few weeks. It will no longer be available after Friday, May 28, 2021. After this date, you will need to use GTFS-Realtime API version 2.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**