OMG!!! I was in so much shock that I didn't get my cell phone camera out in time to get the picture. On the way back from my other property I was following a guy with a new looking JD110 TLB on what appeared to be a 7k utility (had the side rails as part of the strength - i.e. a lawn mower trailer) and it looked like it was moving on the trailer. As we were stopping for a light on Highway 41S I saw for sure that the tractor was moving a bit. I hit the power window on my passenger side to tell the guy that his load was loose but the light turned green and he took off. That is when I noticed that the only thing he had keeping the tractor on the trailer was one of the 1" wide, pull to tighten - like for a dirtbike, strap on the rear and one on the front.
At the next stop light I again tried to get his attention and let him know his new looking tractor appeared to be moving even more on his trailer. Of course, when I got his attention, he flipped me off.

That was when I noticed that he had a new temp tag on both his 2009 F150 and his trailer. Based on that, I assume that he had just bought the whole shooting match and was completely new to everything. I just went ahead and powered by him just in case he lost his new tractor off his new trailer.
I mention this because it's for guys like that that I think these laws are in place. I don't know what a JD110 weighs, but I'd venture to guess that it's too heavy for a 7k trailer. I'd bet his straps were rated for about 300 pounds max. He likely figured that with the front bucket down and the brake set that he didn't need to secure his new tractor. It's people like that guy why scare me. Heck, I wonder what towing rating his F150 has for that matter. I was pulling about 15k and I was able to easily drive away from him with my slightly juiced F350 6.0.