Thanks for posting the actual permit.
It appears the trucking company was taking the back roads in Texas and had to make many right turns and left turns along the route.
I suspect they messed up on one of those turns and the ‘hold downs’ on the trailers got damaged.
Lost to me in these news reports (must be in here somewhere obvious, just that I’m multitasking) is if the victims were going in the same direction, or if they were in an oncoming vehicle, when... ?@*$!!