I have driven this brand new stretch of highway a number of times, it’s a two lane road each way, that originates in Jyväskylä, in central Finland. Keep in mind that these cars have either studded or special treaded winter tires for these conditions. There was an initial accident, that was being handled by police and an ambulance, then came the massive accident of cars slamming into each other as they approached the scene of the smaller, earlier one.
This was filmed by a Canadian motorist.: Lahti-Helsinki Highway crash 12.00 03.02.2012