What Rocky J said. Additional to all of that is the effort or lack of that some shippers put into properly packaging their item for pickup. First off, the local driver is under the gun from the time they leave their terminal to "bump" "X" amount of docks during their day, then once empty, load up on the way back to the terminal.
Way to often the reciever wastes way to much time on a perfectly packaged, ie; visably undamaged delivery under the suspicion that something is wrong which in this case is the shippers problem. That is where a totally obnoxious driver has the advantage. After a day of that kind of nonsense, then it's off to pick up outgoing freight. Way to often, the freight is poorly strapped to inadequate palleting. Rule of thumb; if your freight overhangs the pallet, all bets are off. If you scrimp on strapping, same thing goes. The smart shipper will also go above and beyond. By above, I mean to palletize freight so that something can be stacked on top as needed because likely that is what will happen, ready or not.
As I recall, the pro numbers come in duplicates? When I did local, I would load up the freight with them. I would also put some clear tape over a pro on a suspect surface where it might easily come off. LOL, I would rather have been cussed out for hard to remove tape then responsible for lost freight.