Acoustic grinding of REM tracks

Nature of work :

In preparation for the next phase of dynamic testing to test the systems and prepare the facilities for the REM commissioning, acoustic track grinding is planned between the Bois-Franc station area and Canora station. This work will take place one lane at a time at night, beginning on June 19, 2024 between 8:00 p.m. and 06:00 a.m. for approximately 15 days.

Grinding the track reduces rail roughness, thereby attenuating the noise associated with the passage of REM cars. The grinder - the equipment used to perform the grinding - will travel at a speed of around 30 km/h over the section, making between 10 and 12 round trips per night. Occasional noise impacts are to be expected. 

Regarding the control of sound impacts: 

The arrival of the REM cars may raise questions about the noise caused. In this regard: 
1.    An analysis is underway to confirm that the noise reduction measures already installed on the network respect the sound limits. 
2.    The acoustic grinding of the tracks, which serves to reduce rolling noise, will be completed before the start of the tests scheduled for spring 2024.
3.    Further communications will follow ahead of the next test phases. 

The map below shows the area of operation: