The Green Line Light Rail Transit system will add 28 stations and 46 kilometres of track to Calgary’s existing LRT system. The line will run from 16th Avenue north to 126 Avenue SE, with an underground tunnel for the downtown portion of the system. The initial plans were for the Green Line to be constructed as a bus-only transitway but was later converted to LRT as funding became available. With the selection of Bow Transit Connectors (BTC), in 2023, the Development Phase, has begun, which will allow for collaboration, design progression, and agreement on project costs, risks, and overall schedule between Green Line and BTC, before signing a Project Agreement. As part of negotiations, Green Line agreed to extend the Development Phase from approximately 12 months to 16 months to allow for greater design progression and cost certainty. The Implementation Phase remains on track to begin in 2024.