On April 12th, 2016, Timothée Millet, mobility advisor at Arpent, presented the results of his research on the optimization of Public Transit on Exclusive Way (PTEW) projects at the 51st Transportation Congress and Trade Show, organised in Québec City by the Association québécoise des transports (AQTr). The PTEWs share the characteristic of being on dedicated lanes or tracks. They comprise of transport systems as bus rapid transit (BRT), light rail transit (LRT) and subway. They are attractive transportation modes for passengers although they require substantial construction and operation costs, which can postpone or annihilate their implementation. According to the experience of several cities, it is possible to optimize a PTEW project in order to make it more efficient and equally effective. Thus, the conference suggested an optimization method applied to the Montréal’s LRT project as a case study. This method proposes optimized scenarios which are functional and cost efficient in terms of investment and operation costs. Other PTEW projects could profit in the future from this expertise developed by a member of Arpent.