Ontario Provincial Police logged 194 collisions in southwestern Ontario between 6 p.m. Wednesday and 9:30 a.m. Thursday morning.
Among those 194 were seven tractor trailer collisions and three motor vehicle collisions along Highway 401 in Chatham-Kent.
Despite the high volume of accidents on the 401 in that region, Chatham-Kent OPP Const. Shawn Eagan said there were no reported injuries.
"The vehicles are just ending up into the ditch, some of them into the guardrail," he said. "So no collisions between vehicles, just themselves going into the ditch."
Eagan said there were still four tractor trailers that need to be cleared, with two jackknifed in a median and two in a ditch, as of 11 a.m.
"The highway still has a lot of snow blowing across," he said. "If there is an area where it's safe [to clear the vehicles], we will."
Poor conditions on secondary roads have also prevented OPP from shutting down sections of the highway to clear "a couple of the tractor trailers," Eagan said.
According to an OPP tweet, police usually log 20 accidents on a "typical night."
OPP told drivers to expect winter driving conditions throughout Thursday and Friday.
"Hopefully everyone can slow down, take their time, and drive to conditions," said Eagan.
Environment Canada forecasted a mix of sun and cloud with a 40 per cent chance of flurries in the region on Thursday.
On Friday, Environment Canada predicts a mix of sun and cloud, with a 60 per cent chance of flurries.