From the pictures I have seen - and this is merely looking at someone’s posted photos. The truck was towing an open empty “car hauler” trailer that looks like an 18-20 footer. ( not sure if it was loaded prior to accident ) The truck ended up in the woods - on the opposite side of his travel lane The road had double yellow lines, and is a ( unknown how sharp ) curve with ( what looks like ) decent visibility in the direction the truck was traveling as the road curves to ( his ) left. The bikes connected in the front area as the bed and trailer don’t appear to be impact damaged. Most bikes appear to have hit other bikes, or not hit at all as they are not very close to where the truck is off the road. There are no helmets visible in any pictures I saw except one person standing who appears ( long distance ) to be wearing a skull cap helmet.