 Fares are only partially integrated with the Réseau de transport métropolitain (RTM) commuter rail system, which links the Metro to the outer suburbs via six interchange stations (, , , De la Concorde, , and Parc).The RTM sells tickets allowing the use of both its trains and the Metro (TRAM titles) while the STM tickets do not permit the boarding of trains.Fare payment is via a barrier system accepting magnetic tickets and RFID like contactless cards.