Discussion over Montreal's proposed Pink Line is well underway thanks to a deal negotiated by Plante and Quebec Transport Minister Chantal Rouleau and Treasury Board President Christian Dubé. When Plante was first running for mayor, her pro-transit platform was designed to ignite an additional form of transportation connecting some of the poorer working-class communities to better public transit. With steps for the promised Pink Line, an article from the CBC states Plante had to secure support to Quebec by providing "$800 million to Quebec City, to help pay for the provincial capital's proposed $3.3-billion tramway network."

"The Pink line — which, when completed, is to run from Lachine through downtown to Montréal Nord in the eastern end of the island — was a key plank in the Projet Montréal platform in the 2017 municipal election. The western portion of the Pink line will now be added to the government's ten-year Quebec Infrastructure Plan (QIP)."