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Haut-Saint-Laurent sector


The RTM Haut-Saint-Laurent sector provides public transit by bus in the cities of Mercier, Sainte-Martine, Ormstown, Très-Saint-Sacrement and Howick.


Schedules and routes
Customer service




You may be entitled to door-to-door public paratransit. This service is provided by Transports Accès inc. You can commute by regular taxi, paratransit or minibus depending on your needs and on the resources available at the time you request the service.


Admission and reservation


Territory served

Transit is available in the following territories:

  • Beauharnois
  • Châteauguay
  • Ville de Léry
  • Mercier


Désolé, cette page n’est pas accessible aux lecteurs d’écran ou à tout autre dispositif d’assistance. En effet, elle contient une carte géographique présentant l’emplacement des terminus et installation intermodales.
No change to our services following new government measures announced January 6, 2021.