Line 3 is a planned extension of the Toronto Transit Commission (TTC) subway system in Toronto, Canada. It aims to connect the Eglinton Crosstown Light Rail Transit line to the existing subway network, enhancing public transportation options in the city. The project will include several new stations and is designed to improve accessibility and reduce travel times for commuters. Line 3 is part of a broader effort to expand and modernize urban transit in Toronto, addressing the growing population and increasing demand for efficient transportation solutions.