I have looked in to this too, for California. We have similar State regs, with the basic "independant ties on each corner" being the same.
Looking at your tractor on the trailer, I do not think you meet this regulation. For the moment, ignore the ties on the loader and the backhoe.
On the front, it looks like you tied off on one side of the trailer, ran the chian through the loader frame or tractor frame, and used a binder on the other side. That is one tie point, not two. A chain should go from one corner on the front of the tractor, to a front corner of the trailer where it will be bound with a binder. Then a chain should be tied to the opposite front corner of the tractor, and ran to a front corner tie point on the trailer and be bound.
In your picture, if the binder loosens, or the chain breaks, the whole front of the tractor is loose.
The same is true for the back of the tractor. Your chain simply goes over the the tractor; it does not appear to connect to it. It does not provide side-to-side- and front-back restraint. If that chain breaks or comes loose, the back of the tractor is loose.
The back chain should be connected to the right rear frame of the tractor, and go to the right rear of the trailer and be bound. Then, it can go to the left rear of the tractor and trailer, and be bound.
Your chain over the hoe is holding the tractor down, but not restraining the hoe and bucket. If the locking cross pins come loose, or are not installed for transport, the hoe could drop or swing side to side still. Best bet would probably be to chain across the end of the hoe near the bucket, and restrain it directly to the trailer deck.
Interestingly, I rented a L35 TLB a couple months ago. the rental yard had the trailer set up with four chains and binders to properly restrain the tractor per Calif regs. There was no restraint for the hoe though; they depended on the two "transport pins" that lock the how in place on the tractor.
All of this is IMHO, FWIW. I chain/bind all for corners of my B8200 based on what I have learnt about Calif rules.
If you find out more, be sure to post. This is good information to learn /forums/images/graemlins/wink.gif