Closure of the Mount Royal Tunnel scheduled for May 11, 2020

REM Frequently Asked Questions

Find the answers to your questions about transit options, fare mitigation measures and the REM project.

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REM fares

What are the differences between REM fares?

REM fares are available to exo6 Deux-Montagnes train users.

The MTLREM fare allows users to access trains on the exo6 Deux-Montagnes line as well as bus and métro service on the Island of Montréal only.

Important: If you plan to use the métro from Montmorency, De la Concorde, Cartier or Longueuil stations, or if you want to take the bus off of the Island of Montréal, you will require a TRAM fare.

The TRAMREM fare is only for passengers who use local bus service to reach the Deux-Montagnes, Grand-Moulin or Sainte-Dorothée stations. It gives users access to trains, buses and the métro.

Mitigation measures

What are the mitigation measures?

Starting May 11, 2020, a transitional network will be set up to mitigate the closure of the Mount Royal Tunnel, affecting users of the Mascouche and Deux-Montagnes train lines.

Fare pricing that takes into account the impact on exo5 Mascouche users:

  • A discount of up to 30% off, to a minimum fare price of $86.50

Fare pricing that takes into account the impact on exo6 Deux-Montagnes users:

  • Free rail shuttle and STM Trainbus 964 Bois-Franc/Côte-Vertu shuttle

  • For OPUS+ and OPUS+ entreprise subscribers: five free months in 2020, and following that, a preferential monthly fare of $86.50 until construction on the REM is completed

These measures have been in effect since January 2020.

How will transit authorities synchronize their services?

As soon as the Mount Royal Tunnel is closed and the mitigation measures are in effect, a committee (also called a tactical coordination squad) will monitor the morning and afternoon peak periods on a daily basis. The MTQ, ARTM, STM, STL and exo will participate.

This committee will focus on synchronizing operations and make any adjustments for the peak periods that follow to ensure the service runs as smoothly as possible.

exo5 Mascouche line transit options

What are the itineraries and fares for Shuttles 500, 501 and 502?

These three shuttles were created to transport exo5 Mascouche train users to Radisson métro station, on the Green line.

Shuttle Itinerary Accepted fares



Accepted fares

Mascouche train station to Radisson métro station Monthly TRAM pass in Zone 6 or higher. Fares for the Terrebonne-Mascouche sector.



Accepted fares

Terrebonne train station to Radisson métro station Monthly TRAM pass in Zone 5 or higher. Fares for the Terrebonne-Mascouche sector.



Accepted fares

Repentigny train station to Radisson métro station Monthly TRAM pass in Zone 5 or higher. Local fares outside the L'Assomption sector.

Consult the schedules for Shuttles 500, 501 and 502.

Can I learn more about the route that bypasses the mountain?

There will be three morning departures to downtown Montréal

Three trains will travel downtown in the morning (6:17 a.m., 6:50 a.m. and 7:30 a.m.) and three others will leave Central Station for Mascouche in the afternoon (4:13 p.m., 4:38 p.m. and 5:30 p.m.).

Travel time may vary according to rail traffic

In order to bypass Mount Royal, trains on the exo5 Mascouche line will use a route that is normally reserved for freight trains. Until construction work to improve the track that will enhance service for users is completed, and due to rail yard traffic, exo trains may be required to stop for 5 to 10 minutes in order to relieve congestion in the rail yard.

A change of platform at Central Station

Starting May 11, deboarding and boarding at Central Station will take place on Platform 20.

Are these transit options universally accessible?

Users with reduced mobility who wish to travel downtown may continue to travel on the three trains arriving at and leaving from Central Station.

See the exo5 Mascouche train schedule

For the other trains, users may exit at Sauvé station and take the 31 Saint-Denis – South bus to the next accessible métro station: Rosemont.

exo6 Deux-Montagnes line transit options

Why use longer itineraries like Côte-Vertu rather than Montmorency?

The planned itineraries favour the western section of the métro's Orange line as this section can absorb new users heading downtown, which is not the case for the eastern section, particularly between Montmorency and Berri-UQAM stations.

More broadly, the mitigation measures are set up to direct users from the Mascouche line toward the métro's Green line, and users from the Canora–Mont-Royal, West Island and North Shore sectors to the Blue and Orange lines.

Can I learn more about Shuttles 400, 404 and 405?

Shuttle 404

As of May 11, 2020, shuttle 404 will replace Shuttle 400.

It will serve Grand-Moulin and Deux-Montagnes stations, with service to downtown Montréal on weekdays and weekends.

Good to know: Deboarding and boarding downtown will take place at two different locations during the week


  • at terminus Mansfield


  • at terminus Centre-ville

What transit fares are valid for Shuttle 404?

The following transit fares are valid:

  • All monthly TRAM passes (French) in Zone 5 or higher (including the TRAMREM pass allocated as part of the REM Deux-Montagnes fare mitigation measure)

  • All Laurentides sector passes (French)

  • The MTLREM pass allocated as part of the REM Deux-Montagnes fare mitigation measure

  • The “Unlimited Weekend” pass available since 2018 as part of the REM: this may be loaded to a Solo card from any automatic fare terminals on the exo6 Deux-Montagnes line

Users who hold a monthly STM pass may visit a metropolitan ticket office to obtain a free pass that allows them to use Shuttle 404. Please note that payment aboard is not authorized.

See the Shuttle 404 schedules

Shuttle 405

This shuttle will link Deux-Montagnes station with Sainte-Thérèse station on weekdays during peak periods.

It will allow users to travel on the Saint-Jérôme train line to get to their destination.

Good to know

  • This shuttle is free

  • Please note that REM fares will not be valid for the exo2 Saint-Jérôme train

You must purchase a TRAIN or TRAM pass, in Zone 5 or higher, at the regular price.

See the Shuttle 405 schedules

Why wasn't an extension of the métro's Orange line to Bois-Franc station planned as a mitigation measure?

Extending the métro cannot be considered as a mitigation measure as it notably requires government studies and approval, which are part of a long-term project led by the ARTM. The very essence of a mitigation measure is that it can be deployed rapidly.

Are these transit options for the exo6 Deux-Montagnes line universally accessible?

The current Deux-Montagnes line is not universally accessible. However, users may get downtown by using:

  • The STL's 902 line

  • STM buses, which will be used as shuttles and are equipped with a front ramp that makes them accessible

  • Côte-Vertu station, which users can pass through to make their way downtown.

Côte-Vertu station was supposed to close in May 2020. Where will the shuttles go?

While Côte-Vertu station is closed, bus and shuttle lines will detour to another métro station on the western section of the Orange line. A formal announcement regarding this closure and the service redirection will take place in 2021.

REM project

What is exo's involvement in the REM project?

A dedicated project management team was set up to oversee construction of the REM. This team is responsible for the work schedules. When these schedules are determined, the Autorité régionale de transport métropolitain (ARTM) is in charge of establishing the mitigation measures that exo applies for its customers. To learn more, read the ARTM press release at (French).

How do I follow the REM construction work?

To follow the progress of the project and its impact on transit users, visit the Works Info section of the REM website:

Should we expect further construction work and new mitigation measures between now and 2023?

A work sequence has been planned by CDPQ Infra and communicated to all partners. It includes two main stages:

  1. May 2020: the closure of a first section of the Deux-Montagnes line between Central and Du Ruisseau stations (Mount Royal Tunnel closure)

  2. Mid-2021: the closure of a second section, from Du Ruisseau to Deux-Montagnes stations

For each of these phases, mitigation measures and alternative transportation services will be provided for all of the affected sectors on the Deux-Montagnes and Mascouche lines.

No other major construction phases are planned.

Were elected officials and municipalities consulted before these measures were implemented?

The elected officials, municipalities and districts affected by the closures in effect as of March 2020 have been involved in planning the mitigation measures from the outset. Most notably, they have participated in MPB coordinating partner committees as well as the steering committee. In addition, a Laval–North Shore steering committee was established and meets monthly to discuss challenges in this sector.

Why is the REM construction causing so much disruption to the public transit network?

CDPQ Infra is in the process of completely transforming the Deux-Montagnes line with new technology, replacing it with a light metro rapid transit line. This requires mandatory closures, including the Mount Royal Tunnel, due to major construction work that includes:

  • Changing the rail foundations and power supply

  • Building stations

  • Replacing all level crossings with overpasses

This major transformation will provide a unique opportunity to boost capacity on the Deux-Montagnes line as well as increase connections with other networks, including three with the métro system (Orange, Blue and Green lines). The Mascouche line will be linked to downtown via Sauvé station.

When will the REM open?

The REM will be commissioned in various phases:

Year Phase
2021 South Shore branch (South Shore to Central Station)
2022 Central section (Central Station to Du Ruisseau)
2023 Sainte-Anne-de-Bellevue branch Airport branch Deux-Montagnes branch (end of 2023)

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