Police say a tractor trailer hit the guardrails and was blocking both lanes of the interstate. The driver, 45-year old Robert Trombley, of Massachusetts, had gotten out and was standing in the road.
In white out conditions, police say, a car hit Trombley and the big rig. Another car then hit the back of truck too.
Trombley later died at Dartmouth Hitchcock.
Troopers say the driver of the first car has minor head injuries.
The crash is still under investigation.
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