Extreme weather has created treacherous driving conditions over the past 48 hours.
According to OPP West Region, between 7:00 a.m. Thursday and 9:00 a.m. Friday they responded to 162 collisions.
Police posted images of a serious pileup near Putnam Road which shuttered the 401 for several hours.
They say one person had serious but non-life threatening injuries.
The westbound lanes were closed for more than 7-hours while crews cleaned up the wreckage.
