Global News at 11 Toronto December 19 2019 11:51pm 01:44 Multi-vehicle crash on Hwy. 400 amid snow squalls Police are urging drivers to slow down in the snow. this, after a string of collisions, including a 50 car pileup this afternoon. Albert Delitala reports. Highway 400 reopens south of Barrie after crashes involving around 50 vehicles Responsive site?