</font><font color="blueclass=small">( Same question for the FEL. The FEL ain't falling off the tractor. So what is the chain supposed to hold down? The bucket? Keep the bucket from moving up and down?
)</font>
<font color="black"> On larger equipment this becomes a bigger issue. If a backhoe arm swings sideways it can throw the load off balance or strike other vehicles.
It is very common when transporting heavy equipment less than an hour or so away to just leave it running, especially in the winter time. As the trailer bounces down the highway the controls get jarred and a loader bucket or backhoe arm, etc... can raise up and hit wires, bridges, branches, or raise the center of gravity to the point of being unsafe.
DOT regulations seem like overkill but I'm sure that these type of problems have been repeat issues over the years.
</font>