[Gandalf_The_Gray]

Wonder if the trucker used his blinker before sliding into the ongoing lane and hitting the first truck.

If you look closely at the right side of the second truck at impact there appears to be a snowplow blade showing for a blink or two. That would make sense as plows don't move all that fast and can throw up a cloud of snow that masks them from view.

Bummer, all around...

Regards,
GtG

[VicVega]

Snow plow? I stand corrected. Thought it was a semi that jumped into the lane. Will watch it again. Good eye.