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The REM is the largest public transit project in the Greater Montréal area in the past 50 years. These are the most frequently asked questions.

REM in service

The Autorité régionale de transport métropolitain (ARTM) develops rate schedules for all transit systems in the Greater Montréal area. We are currently working closely with the organization to integrate the REM into this future rate schedule.

The aim is to create a single fare. Customers would buy tickets from the ARTM that could be used in various networks, including the REM, the métro, buses, etc.

Our intention is that rates should be comparable to those currently paid for equivalent distances and that travel fares, for example the Opus cards, should provide access to both the REM and the other transit systems.

Frequency. The REM will be in service 20 hours a day, 7 days a week, with South Shore departures every 2.5 minutes during peak hours and every 5 minutes during off-peak hours.

Twice the capacity. REM will significantly increase the network’s capacity. Once it is completed, twice as many public transit customers will be able to cross the Champlain Bridge to Montréal.

Greater reliability for the trip home. Due to its reliability and dedicated corridor, REM will take you from downtown to: Panama in less than 10 minutes, Du Quartier in 13 minutes, Brossard in 15 minutes. The congestion that buses leaving downtown currently have to deal with will be a thing of the past, replaced by reliable, fast and frequent service.

Connections to metro lines. REM will connect to Montréal’s three existing metro lines: the blue line via Édouard-Montpetit, the green line via McGill and the orange line via Central Station. You will also be able to get to the Montréal-Trudeau Airport, the West Island and the North Shore.

Departure frequency. The REM will operate 20 hours a day, 7 days a week, with departures every 2 min 30 during peak hours and every 5 min in off-peak hours between Gare Centrale and Bois-Franc. Between Bois-Franc and Deux-Montagnes, trains will depart every 5 min during peak hours and every 15 min in off-peak hours.

Capacity. The capacity on the Deux-Montagnes line will increase significantly. For example, during morning peak hours between 6:00 a.m. and 9:00 a.m., the REM will serve 42,100 people (compared to 17,100 currently).

New connections. The REM will connect to Montréal’s three existing metro lines: blue (Édouard-Montpetit), green (McGill) and orange (Bonaventure). You will also be able to get to the Montréal-Trudeau Airport, Technoparc Montréal on the South Shore and the West Island.

Different cars. REM trains are not commuter trains; their cars are more like metro cars from a technological standpoint. REM cars are smaller but will run much more frequently, which explains the significant increase in capacity. The space will be designed for smooth passenger flow at transfer station entrances and exits (poles, bars, wider spaces). Cars will be heated, air conditioned and connected to the Wi-Fi.

Equipped stations. REM stations will be enclosed, covered, climate controlled and sheltered from the elements. You will  wait for the REM on a platform separated from the tracks by an automated screen door system (it will no longer be possible to drop objects on or to cross the track; safety and reliability will thus be improved). All stations will have elevators and be accessible to persons with reduced mobility.

The arrival of the REM means that users of the Mascouche line will have to transfer at the Côte-de-Liesse brand-new station, located just past Ahuntsic train station. This station will be expressly designed to ensure smooth transfer of users between the Mascouche line and the REM :

  • Station equipment will optimize traffic: wide corridors, elevators, shared platform (see the preliminary rending)
  • As soon as you leave the commuter train, you will walk on a covered platform, then enter a closed station, sheltered from inclement weather
  • The high frequency of the REM (2.5 minutes during rush hour) will mean fast boarding for users and reduced waiting times

Once aboard the REM, allow 6 minutes to Édouard-Montpetit (blue line), 9 minutes to McGill (green line), 10 minutes to Central Station (orange line) and 15 minutes to Montréal-Trudeau airport.

Community, works and schedule

Construction work on the REM began in March 2018. To find out when construction will begin in your sector, consult the specific Work schedule page on our website. Work notices will be released in advance to inform citizens who may be affected.

Every week, we update the Works info map. It provides details on each step of the construction process and on any traffic obstructions that might occur.

Subscribe to our newsletter and alerts service, or follow us on Twitter, so you can stay informed about the progress of construction work.

Neighbourhood committees have been established in sectors affected by the construction and more are soon to come. Write us if you’re interested and wish to be part of a committee. Throughout the construction period, information meetings and other events will be organized to keep citizens informed of progress.

For more information, consult our Citizens Space:

The REM will gradually replace the Deux-Montagnes line in 2024.

The work involves replacing the train with an automated light rail transit system. The tracks and power supply will be changed over 30 km, 12 enclosed stations will be built and 3 connections will be added to the McGill and Édouard-Montpetit stations and the Mascouche line. Existing infrastructure such as the tunnel under Mount Royal and the railway bridges will also be renovated and modernized.

Service interruption sequence on the Deux-Montagnes and Mascouche lines: 

  • From March 30, 2020: Closure of the Central station-Du Ruisseau segment (the Deux-Montagnes line stops at Bois-Franc, the Mascouche line stops at Ahuntsic) 
  • From December 31, 2020: Complete closure of the Du Ruisseau segment in Deux-Montagnes 

REM commissioning sequence: 

  • Summer 2022: Commissioning from South Shore to Central station
  • Fall 2023: Commissioning from Central station to Du Ruisseau 
  • 2024: Commissioning from Du Ruisseau to Deux-Montagnes, and the West Island and Airport branches

To learn more about the work and alternate transportation options, consult our specific page: Deux-Montagnes and Mascouche lines

Connexions and access to stations

All REM stations and surrounding facilities will be designed for universal access. All stations will be equipped with elevators and some with escalators, and platforms will be level with the REM car doors.

You will be able to reach the REM stations by foot, bike, public transit or car. Check our interactive map to learn more about the services at your station (parking, drop-off area, bicycle racks, etc.).

Our primary intent is to focus on a sustainable solution: public and active transit. Bus networks in various municipalities will be revised to optimize feeder service to REM’s stations. The buses will stop near the stations for quick and efficient transfer to REM's metro cars. This cooperation with transit companies will continue throughout the project to ensure optimal feeder service as soon as REM starts up.

Yes. The REM will be connected to three Montréal métro lines: the orange line via Bonaventure station (Central Station), the blue line via Édouard-Montpetit station and the green line via McGill station.


The REM will run on the central deck of the new Champlain Bridge, replacing the reserved bus lane. The REM will access the bridge by running in the centre of Highway 10, between the two traffic lanes. At the bridge exit, it will stop at Nun's Island (Pointe Nord) and then continue on to downtown, crossing the Nun's Island channel via a new dedicated bridge.

The REM Chevrier station is not planned for phase one of the project.

Until the REM’s planned commissioning in 2022, the existing Chevrier terminus will continue to operate. During the construction of the right-of-way and infrastructure required for the REM to travel in the centre of Highway 10, new access ramps and reserved lanes for buses will be built so that public transit service in both directions remains efficient for riders on the South Shore. The access ramps will be constructed in 2018, and be in use starting in 2019.

After the REM is commissioned, the bus station and park-and-ride lot at the Chevrier site will be moved south of Highway 30, to the REM’s Rive-Sud terminal station. The agglomeration of Longueuil aims to keep the Chevrier sector as a transit-oriented development (TOD) area, and the objective is to provide public transport service for this sector, with a method to be determined. To travel downtown, riders in the Chevrier sector will be directed to the REM station that is closest to their departure point.

In February 2018, the REM route in the Griffintown and Pointe-Saint-Charles sectors was changed. The station will now be aerial (view the interactive map). This is an important station for Montréal’s downtown neighbourhoods and for the development projects that are happening in the area. Located in Griffintown, between Ottawa and William streets, the station will be integrated into the Viaduc Sud, or “southbound overpass,” a structure that functions as a building supporting a rail bridge entering Central Station from the south.

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If your question isn’t answered in the FAQ, visit our Citizens Space for more information (see areas below), or contact our team.

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