Dash cam footage posted today to Reddit takes us to an incredible scene in Abbotsford, where amazingly no one was significantly hurt. 

A major collision happened at Sumas Way near Highway One on Sunday afternoon, just before 1:30 p.m. 

The video, posted by a Reddit user known as Frost92, begins as a white pickup truck makes a left turn on a yellow light, ostensibly clearing the intersection.

However as the pickup completes its turn, the truck clips an oncoming flat-bed truck, loaded with pallets of roofing shingles.  

The semi-trailer careens into the intersection, swerving right and left, before flipping onto its side and smashing into two vehicles facing the opposite direction. 

The semi winds up completely upside-down, wheels in the air.

The crash shut down all northbound lanes - and all but one - southbound lane. 

Weather was not a factor.