An interactive strategic planning tool that maps mass transit investment scenarios across an entire national or metropolitan network. Users select from alternative build-out scenarios (e.g., current approval, intensified construction, maximum build), filter by operation year (2024–2050), and toggle transport modes — heavy rail, metro, light rail, and BRT — to see how the network evolves over time. Clicking any section reveals directional passenger volumes, route breakdowns by AM peak demand, and line-level detail including opening year, headway, capacity, and busiest segments. Built to support phased delivery decisions and scenario comparison for multi-billion-dollar transit investment programs.