Summary

In view of the discomforts reported by Montréal's subway operators, the STM and the union representing subway operators joined forces to ask the IRSST to quantify the level of vibrations to which the operators were exposed and make recommendations concerning a new seat for the operator cab. The summary document describes the three-part study (ergonomic study, vibration study, and design of a seat prototype), which involved a series of simulations and laboratory and actual-cab tests, and ultimately led to both the installation of new seats and modifications to the operator cab. It also illustrates how the process was facilitated by the formation of a working group and steering committee involving the joint representation and active participation of all stakeholders concerned, as well as researchers and a consultant.