Another blast of snow and high winds are expected to hit southern Ontario after an already treacherous weekend on Ontario's highways and back roads.

Blizzard-like conditions have caused widespread road closures across much of southern Ontario. On Friday night more than 400 people were stranded in their cars in Dufferin County.

Mike Richards was one of those people whose car went off the road. “I got stuck on Friday in a drift. I had to leave my car there.”

The OPP say they've responded to more than 1,600 crashes since Friday evening. Three of them have been fatal collisions.

Eight OPP cruisers have also been struck by passing motorists resulting in minor injuries to two police officers.

Police say the problem is that many drivers aren’t driving according to current conditions.

“People are just driving way too fast for the road and weather conditions,” says OPP Sgt. Dave Rektor. “They are not paying attention to anything in front of them or down the road.”

As of Sunday morning, more than 60 road and highway closures have been ordered across the province.

In Arthur the intersection where Wellington Road 109 meets Highway 6 was closed for part of the day.

The bad weather could continue into Monday. Environment Canada says an Alberta clipper will move into southern Ontario Sunday night, bringing another 2 to 5 centimetres of snow. That mix of snow and strong wind gusts could create snow squalls in some areas, causing problems Sunday night and continuing into Monday.

Drivers are urged to exercise caution as blowing snow could reduce visibility.

With files from The Canadian Press