Line 5 is a proposed underground transit line in Toronto, Canada, aimed at improving public transportation in the city. It is designed to connect the Eglinton Crosstown LRT to the Toronto Transit Commission subway system, enhancing accessibility for residents and commuters. The project is part of a broader initiative to expand the Toronto transit network, addressing congestion and providing faster travel options. Line 5 will serve key neighborhoods and major employment areas, making it easier for people to navigate the city and reducing reliance on cars.