Strap twisting on a flatbed!

We put a half twist in ours to keep them from "vibrating" in the wind.

 

Personally, i twist them on some loads, others I don't never had a problem with DOT either way. Some DOT prefer them not flapping by twisting them though, but all of that is according to the famous grapevine... Wish I could help more. The regs don't say you can't, I don't think.

 

It depended on the load I had. If it was to the limit of the length of strap, than I most often would put a twist in the strap.
With shingles, I never found that a twist in the strap did any good.

 

SO pull out your little green book, and look it up.

 

I hate twisted straps, I prefer with my shingle loads to use my Veeboards plastic corner protectors and tigthen them enough so there is no movement in the straps when your rolling down the road

 

Kubota, I was the same way. Asphalt shingles, I would put on the edge protectors and tighten the snot out of the straps. Never had a worry about those loads moving any.
However, there were some loads of cedar shingles, that when unbroken (onto separate pallets) could stand 7+ feet tall off the deck of the truck.
I had to twist the strap to help prevent it from loosening soo much. Course, I would also drive slower, and take the corners slower as well.

 

I have always made sure my straps were straight, I think it looks cleaner. I did a little search and found this, From a spokesman from Kinedyne....

You can read the whole article >here.<

 

If you haul insulation or something like that wrapped in plastic it is a good idea to put a half twist in the strap. When a strap is straight it slaps the product and can tear plastic wrap, paper, etc... , when a strap has a twist in it rather than slapping the vibration flows out through the ends like a guitar string, it just glances against the product. Irrelevent to asphalt shingles though I would think. Just put your vee-boards on and crank em down.