A semi-truck heading west on Highway 30 jackknifed and fell several metres off a Vaudreuil-Dorion overpass just before midnight Wednesday, according to the Sûreté du Québec (SQ).
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The driver suffered minor injuries.
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Quebec provincial police said at least three other major accidents struck the Montreal area in the last 24 hours.
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SQ spokesperson Sgt. Joyce Kemp said there were also accidents on the A-10, A-20 and A-40.
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Near Mont-Saint-Hilaire, there was a 47-car pileup that left one man dead and 17 people injured.
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While the SQ is still investigating the causes of the accidents, the agency is advising drivers to plan carefully before heading out into the winter weather — and to pay careful attention to the vehicle in front of them.
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