Permabanned
Motorways don't have much subtlety, they are big with high visibility a long way ahead. Crashing into stopped vehicles is the drivers fault.
The reason for there being a blocked road does not excuse the van driver for his lack of control.
Not convinced this will not make the Polish people even more entrenched about accepting more migrants, I suspect they won't be blaming the van driver's lack of attention to the road ahead, `tis human nature. Laying logs across a motorway is not the best way to get potential host countries upon one's side is it?