On Saturday, Nov. 21, planned construction is taking place on the Stouffville line. GO trains will run between Old Elm/Mount Joy GO and Scarborough GO. Lakeshore East hourly train service to Union Station will be available at Scarborough GO. If you are travelling to the Santa Claus Parade on Nov. 22, regular Stouffville line train service will resume. Learn more about this and upcoming construction on the Stouffville line.