Fast-driving trucker accidentally saves driver hauling doubles from an icy jackknife

A truck driver accidentally saved a fellow driver hauling doubles from jackknifing in winter weather in this dash cam clip. 

In the video, a trucker is passing another driver when the rig hauling doubles seems to start to jackknife. Instead of jackknifing, the doubles rig bonks into the driver trying to pass, probably halting what could have been a more serious accident. 

The video poster says both trucks ended up being towed, but no one was hurt. Commenters say that the filming driver probably saved the other driver from jackknifing, but was lucky himself, because he was driving pretty fast for the road conditions. 

Things definitely could have been worse. Watch the video below.