When traffic slowed down in a construction zone, the dash cammer says he looked in the rear view mirror and realized that the semi behind him wasn’t going to be able to stop in time.
From the video description: “Coming up to a construction neckdown to one lane, I happened to look in my rearview mirror and saw the semi coming up way too fast. I shifted over only a little because my brain was thinking there might be cars in the other lane. The truck barely missed me. The debris from the hit actually dinged the front of my car — I was that close.”